454U1ChemistryPaper INovember2012I % hour
FINAL SEMESTER 2 EXAMINATION 2012MAKTAB RENDAH SAINS MARA
FORM 4
CIIEMISTRYPAPER I
I hour 15 minutes
DO NOT OPEN THIS BOOKLET UNTIL BEING TOLD TO DO SO
L This question paper consists of 50 questions.2. Answer all questions-3. Answer each question by blackening the correct space on the answer shest'
4. Blacken only one sPace'5. If you wish to change your answer, erase the blackened mark that you have made'
Then blacken the space for the new answer'
6. The diagram in the questions provided is not drawn to scale unless stated'
7. You may use a non-progwrmmable scientific calculator'
This question paper consists of2l printed pages including the front page
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Question Lo Question 50 are followed by four options +.B,C orD'choose the best option for each qlestion and blackened the corresponding sPace on the obiectiveanswer sheet.
l. which of the following scientists is involved in the development of the Periodic Table?
A Neils BohrB John DaltonC James ChadwickD Henry J.G. MoseleY
2. Group l8 elements are known asA halogensB noble gasesC alkali metalsD transition metals
3. Which ofthe following elements are in Group l? in the Periodic Table of Elements?
A Fluorine and bromineB Chlorine and xenonC Bromine and neonD Fluorine and helium
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4. Metal of Group I elements react with water' Which statement is true?
A All the metals react vigorouslyB The reaction Produoes white flameC Solution produced turns red litmus paper to blueD The gas released ignites a burning wooden splinter
5. Which statements are true about the properties of elements across Period 3?
I Metallic ProPerties decreasesIl EleotropositivitY increasesIII Proton number increasesIV Atomic size decreases
i
A I and IlB II and IIIC I, III, and IV
. D II, III, and IV
6. During the formation of ionic bonds, the atoms ofelements
A transfer electronsB donate electronsC accept electronsD share electrons
7. Which substance.is a covalent compoun$l
A HYdrogen chlorideB Magnesium oxide
. C Sodium chlorideD Lithium oxide
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9. Diagram 1 shows the formation ofa compound.
4
8. Which statement describes a covalent bond?A Van der Waals forces between non metal atomsB Transfer ofelectron between metal and non metal atomC Metal atom donate electron to achieve a stable electron arrangementD Non metal atoms share electron to achieve a stable electron arrangement
Calcium chloride
Diagram I
Which of the following compound has the same type of bond as the compound formed in
Diagram l?
A Sulphur dioxideB Carbon disulphideC Hydrogen chtorideD Potassium sulphide
10. Which statement explains why a covalent compound d&s not conduct electricity?
A Insoluble in waterB Ions present are not freeC Consist of neutral moleculesD Insoluble in organic solvents
I l. Which of rhe following substance is an electrolyte?
A Chlorine gas, Cl2B Hydrochloric acid, HCIC Carbon tetrachloride, CClrD Phosphorus pentachloride, PCls
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12. Which ofthe following ions are present in copper(Il) sulphate solution?
A Cul* and H* ionsB Cu2* and So+2- ionsC Cu2*, so+z- and H" ionsD cu?*, soq2-, H* and olf ions
13. Diagram 2 shows the apparatus set-up for the electrolysis of t '0 mot dm-3
silver nitrate solution.
.0 mol dm-3 silver nitrate solution
Diagram 2
'i
Which of the following are the ions that attracted to anode?
A Ag* ionsB NOs- ionsC Ag* and Ff ionsD NO3- and OH- ions
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14. Diagram 3 shows the apparatus set-up ofa voltaic cell that isthe electrodes.
made up of iron and zinc as
0.1 mol dm-r
Zinc
0.1 mol dm-3
zinc nitrate solutioniron(ll) nitrate solution
. Salt bridge
Diagram 3
What is the direction of the electron flow in the cell?
A From zinc to iron electrode through salt bridgeB From iron to zinc electrode through salt bridgeC From zinc to iron electrode through extemal circuitD From iron to zinc electrods tfuough external circuit
15. Diagram 4 shows the apparatus set-up ofa voltaic celt that is made up ofmagnesium andmetal X as the electrodes.
Magnesium MCTAI X
Dilute hydrochloric acid
Diagram 4
Which of the following metal gives the highest voltage reading?
A
B
C
D
Iron
Silver
Copper
Aluminium
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16. Which particle enables acids to show its properties?
A Hydroxide ionB HYdrogen ionC HYdrogen atomD HYdrogen molecule
17. Which of t}le following gases will change damp litmus paper from red to blue?
A OxYgenB AmmoniaC Carbon dioxideD HYdrogen chloride
18. Which of the following are strong acids?
I HYdrochloric acidII SulPhuric acidIII Ethanoic acidIV Nitric acid
A I and IlB lI and IIIC I, II and IVD II, III and IV
19. A student is stung by an insect with an alkaline sting'-l Whi.h substancels iuitable to treat tlie student?
A VinegarB DetergentC ToothPasteD Baking soda
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20. Table I shows the pH values offour solutions with the same concentration'
Solution pH valueP 1.0
a 2.0R 4.5S 6.5
Table I
Which solution has the lowest concentration ofhydrogen ions?
APBQCRDS
21. Which substance is used by farmers to remove excess acidity in the soil?
A Calcium nitrateB Calcium chlorideC Calcium sulphateD Calcium hydroxide
22. Which substance is a soluble salt?
A Silver chlorideB Zinc carbonateC Sodium nikateD Barium sulphate
23. Which salt is prepared through precipitation?
A Lead(II) iodideB Barium chlorideC Potassium iodideD Ammonium chloride
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24. Which salt can be prepared by reacting a metal with a dilute acid?
A Silver nitrateB Lead(ll) nitrateC CoPPer(II) sulPhateD Magnesium sulPhate
25. Which ofthe foltowing reactions represent double decomposition reactions?
I Pb(NOr, + NazSO+ ) PbSOq + 2NaNO:II Ba(NOr2 + 2KCl ) BaClz + 2KNO3
IV Ba(NO:): + Na2SO4 ) BaSOa + 2NaNG
A I and IIIB II and IIIC l, III and IVD ll, III and IV
] 26. Th" follo*ing chemical equation shows a reaction between sodium and
oxygen where a
and c are integers.
,rNa+G, ) d--lWhat are the values ofa, c and the formula ofthe product obtained?
a c Formula of Pr9d-uct
4 2 Na2O
2 2 NazO
2., NaOz
4 2 NaOz
B
C
D
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27. Diagrarn Sshows six transition elements in the Poriodic Table of Elernents' Which of the
follJwing is true about the elemene?
Diagram 5
A
B
C
D
Low densitY
Loli mehing Point
High solubilitY in water
High tensile str€ngth
28. The following statements describe the characteristics ofan element'
' Aqueous solution ofan ion are green or brown in oolour
. . Act as a catalyst in the production of ammonta .. Has Nvo oxidation numbers' +2 and+3'
Which of the follorving is the element?
B PlatinumNickel
Iron
C
D
29, Diagram 6 shows the electron anangellent of element X and Y. Which of the bondingtype and formula is true for compound for.med bctween the two elements?
A
B
C
Formula
XY
XYz
XY
XYz
Diagram 5
Bonding'tYPe
ionic bond
.ionic bond
. covalent bond
covalent bondD
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l2
' 30. Table 2 shows the proton number offour elements'
Table 2
Atom Y has 3 shells occupied with electrons. Element Y reacts with chlorine to formcompound T which has strong electrostatic forces.Which of the following shows element Y and the chemical formula of T?
Element Y
A LithiumB Calcium
' C MagaesiumD Potassium
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Element Proton number
Lithium3
Magnesiumt2
.Potassiumt9
Calcium20
CompoundT .
YCI
YCIu
YC12
YCI
3l . The following statements are some information about the compound formed between
element P and Q.
o Dissolve in water. High melting point. Solid at room temperature
Which is true about element P and Q?
A P is a metal element and Q is a non melal elementB P and Q have equal number of electronsC Both P and Q are non - metal elementsD Both P and Q share electrons
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IJ
32. Diagrarn 7 shows apparatus set-up of electrolysis of aluminium oxide' AlzOr'
Molten lead(Il) oxide
Diagram 7
Which ofthe fotlowing is the halfequation at anode and cathode of this process?
33. Diagram 8 shows apparatus set-up for electrolysis of0'l mol din-3 sodium nitrate solution
using Platinum electrodes'
0.1 mol dm-3 sodium nitrate solution
Diagram 8
Which of the following pairs of ions that will be selected discharged at anode and
cathode?
pb2* + 2e --+ Pbpbz* + 2e --r Pb
Pbz" + 2e '-, Pb
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A
B
C
D
Anode Cathode
No:- Na'
oH- Na'
oH-=--
NOr- H'
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34. Diagram 9 shows electrolysis of 0'1
electrodes-
Copper ele.trode
t4
mol dm-3 copper(Il) sulphate solution using copper
0.1 mol dm-3
copper(Il) sulPhate solution
Diagram 9
Which of the following will be observed at anode after 30 minutes?
B
C
D
Brown solid dePosited
Electrode becomes thinner
Electrode becomes thicker
Colourless gas bubbles released
35. Diagram I 0 shows the apparatus set-up for electroplating an iron key with silver'
Iron key
Diagram l0
What is X?
A Silver nitrateB Iron(II) nitrateC silver chlorideD Iron(III) chloride
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36. Diagram I I shows the apparatus set-uP ofa voltaic cell with magnesium and copper as
the electrodes.
CopPer
Copper(Il) sulphate solutionMagnesium
Magnesium nitrate solution
Salt bridge
Diagram 1 I
Whichofthefollowingis.thehalfequationforthereactionatnegativeterminal?
A
B
C
D
M{'+2e"-MgMg--- Mg2* + 2e
Cu2* + 2e -- CuCu --- Cul*+ 2e
37, Which ofthe following substances reacts with calcium carbonate to produce gas bubbles?
A Salt solutionB
cD
Ethanol
Vinegar
Sugar solution
38. Table 3 shows the concentration and pH values oftwo types ofacid'
Table 3
Which statement is true about the acids?
A Mis a weak acid, Nis a strong acidB Concentration ofhydrogen ion in Mis higher than tr/C The degree of dissociation ofacid 7f is higher than acid M
D M ionises partially in water, N ionises completely in water
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Type of acid Conc.ntration / mol dm-' pH value
M 0.1 I
N 0.1 6
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39. Which ofthese are suitable reactants for neutralisation reaction?
I Sulphuric acid + sodium hydroxidetl Hydrochloric acid + copper(Il) oxide
III Sulphuric acid + calcium carbonateIV HYdrochloric acid + magnesium
A
B
C
D
I and II
I and lV
II and lllIII and lV
40. The word equation below represents a chemical reaction-
What could substance W be?
A Zinc sulphateB Zinc carbonateC CoPPe(Il) oxideD CoPPer(II) hYdroxide
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Dilute hydrochloric acid + Substance W ' Salt + water * carbon dioxide
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41. Rubidium is below lithium in Group I elements'What will happen when rubidium reacts with water?
A Reaction produces less gas bubbleB ' Reaction occurs more slowlYC Produces Yellow flameD Produces an exPlosion
42. Element X and element Y are located in Group I and Group 17 in tle- nerjo{i1 fatt3 ofElement respectively' X reacts with Y to form a compound' What is the chemrcal rormula
or
the compound?
AXYB x2YC XY2D X2Y3
43. Table 4 shows the electron arrangeinents of four atoms'
Table 4
Arrange the elements in increasing order of electronegativity'
A F, AI, CI, KB F, CI, AI, KC K, AI, CI, FD K, CI, AI, F
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44. Table 5 shows the properties ofcompound P' Q and R'
Which of the following represent P, Q and R?
A
B
C
D
I and III and III
II and IV
III and IV
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ProPerties
Soluble in water, does not conduct electricity
Soluble in water, conduct electricity in both
molten and aqueous state.
Compound
P
o
I tnsoluble in water, conduct electricity inI
I molten stateR
Table 5
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45- Diagram
solution.
12 shows f}le apparatus
19
set-up of eleotrolysis of concentrated potassium chloride
Concentratedpotassium chloridesolution
Carbon elechodes
Diagram 12
What is the halfequation at cathode?
A K*+ e- ) KB 2r{+2€ > H2C 2Cl' ) Clz+ 2e-D 4OH- ) 2H2O + 02 +4e
46. What is the volume of distilled water required to be added to 25.0 cm3 of 0.5 mol dm-3nitric acid in order to produce a solution of 0.1 mol dm-' ?
A
B
C
D
5.0 cm3
12.5 cm3
125-0 cm3
150.0 cm1
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47.Diagraml3 shows the titration of hydrochloric acid and potassium hydroxide solution
0.2 mol dm-3
hydrochloric acid
50 cm3 of 0.I mol dm-3 ofpotassium hYdroxide solution +
phenolphthalein
Diagram 13
What is the volume ofhydrochloric acid needed to neutralize potassium hydroxide
A 25 cm3B 50 cm3C 75 cm3D 100 cm3
48. Diagram 14 shows a chemical cell
Copper plate
Coppe(II)
Copp€r atom loss€s electron to form oopper(Il) ion
Copper(ll) ion acc€pt electron to form copper atom
Zinc ion accept electron to form zinc atom
Zinc storn loses electron to form zinc ion
Zinc plate
Zinc sulPhale solution
sulphate solution
Diagram 14
Whatisthechemicalreaotionthattakesplaceatthepositiveterminalofthechemical
cell?
A
B
C
D
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49. Table 6 shows information about three voltaic cells.
Pair of metals Potential difference (Y) Negative terminal
R and copper 0.44 R
S and copper 110 s
T and copper 0.53 Cu
Table 6
What is t}re potential differenbe for the pair of metal S and T?
A 0.97 VB 2.14 Vc 2.23 Y
2.67 Y
50. 40 cm3 of 0.5 mol dm'3 nitric acid is added to 50 cm3 of 0.2 mol drr3 sodium hydroxide'Calculate the mass ofthe salt formed in this reaction.[Relative atomic mass: Na; 23, O; 16, N; 14, H;1]
A 0.85 gB l l2gC l.7O gD 2.55 g
END OF QNESTION PAPER
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4541ChemistryPaper 213November20122 Yz hour
FINAL SEMESTER 2 EXAMINATION 2012MAKfAB RENDAII SAINS MARA
FORM4
CHEMISTRY
Paper 2 & 3
Two hours and thifi minutes
do Nor oppN TrrE eUESTIoN BooKLETLINTIL BEING TOLD TO DO SO
L Write your name and oollege number in. the space provided.
2. This question booklet consists of SectionA, B and C.
3. Answer atl question in Section A and C.4. Answer any one question from Section B' I5. You may use a non-Programmable
sciEntific calculator.6. The diagrams in the questions provided
are not dravr'n to scale unless stated.
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Section QuestionFullmark
Marks
A
1 t2
2 12
3 12
4 12
B
5 20
6 20
C
l5
8 t7
TOTAL 100
This question booklet contains 17 printed pages.
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SULIT )
Section A
148 narksl
Answer all questions in this section.
Table I shows some elements in Period 3 in the Periodic Table of Elements.
Elernent Sodium Aluminium Silicon Chlorine Argon
Proton number 11 l3 t4 l7 18
Table I
Based on Table 1, answer the following questions:
(a) State one element which is(D metal
(iD semi-metal
(iii) non-metal
13 marksl
Chlorine is in Group 17 in the Periodic Table. State the common name forGroup 17 elemerits.
11 nark)
(c) Write the electron arrangement of sodium atom.
ll narkl
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4541D
L
(b)
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i
-)
State the number of valence electron of argon atom'
4s41/2SULIT
(D(d)
fl mark'l
(iD In which group can you find argon in the Periodie Table?
ll marhsl
(iiD Argon is chemically unreactive. Explain.
12 marksl
(e) (D Which element forms an amphoteric oxide?
I I markl
(ii) Write the chemical formula of the oxide of element in l(eXi)'
Il narkl
(i ii) State one chemical property ofthe oxide in l(e)(ii).
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I-r(-lo1
[E
SULIT 4 4541D
2. Diagram 2 shows the electron arrangement of compound J. Compound J is formedfrom the reaction between element X and element Y. The letters used do not
. represent the actual symbols of the elements.
\iit,l)
Based on Diagram 2:(a) State how Y ion and X ion are formed from their atoms.
Y ion:...........
X ion:...........12 marksj
(b) Write the electron arrangement for atom X and Y
Y:,..--....12 marks"l
(c) State the type ofcompound for J,
ll mark.l
Write the chernical equation for the reaction between element Xand element Y to form compound J.
12 marks'l
(iii) State two physical properties ofcompound J.
a- -\2a -.+- \.i ,.-.,. I t /-.,..-\ Ii{oiiltioiitI \C./ i | \\o/./ IL j \-_ '-r- )
Dirgram2
(i)
(ir)
12 marks'l
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SULIT
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4541D
Y exists as diatomic molecules. Draw the electron arrangement for
the molecule,
12 marksl
Name the type of bond in 2(d)(i)'
..,..............-..:,..,-.-..
U narkl
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(d)
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SULIT
J.
6 4s4ll2
Diagram 3 shows the apparatus set-up for the electrolysis of 0.001 mol dm-3hydrochloric acid solution using carbon electrodes X and Y'
Carbon electrode
Diagram 3
Based on Diagram 3, answer tlre following questions.
(u) (D What is meant by cation?
Carbon electrode X
0.001 mol dm-3hydrochloric acid
ll nmkl
(ii) State all the ions present in hydrochloric acid solution.
(iiD
11 narkl
Which electrode is the anode and cathode.
Electrode X: '....'.'.'....'....
Electrode Y:12 marlcsl
Name the gas formed at electrode X.
11 narkl
Write the half equation for the reaction that takes place at electrodex.
(b) (D
(iD
ll markl
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SULIT4541D
Electrolyte
Anode
Cathode13 narksl
Write the halfequation for the reaction that takes placeht cathode'
ll nukT
(c) The electrolvsis is repeated by replacing 0.001 mol dm-3 hydrochloric acid
solution witlr 1.0 moi dmr hydrochloric acid solution'
trtrr'hat will be observed at the electrodes?
Electrode X:
Electrode Y:12 narksl
One ofthe usage ofelectrolysis is electroplating' A student intends to
electroplate anlron spoon with silver to make it more attractive'
Suggest the suitable substances as the:
(d)
(e)
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SULIT 4541D
which contains the highest concentration of the
12 marksl
Table 4 shows the pH values of solutions V, W, X, Y and Z with a concentrationof 2.0 mol dm-3.
Solution w x Y ZpH value I 4 7 l0 13
Table 4
Based on Table 4, answer the following questions.
(a) State one solution which has the following properties:
(i) Neutal:................
(ii) Alkaline:12 marksl
(b) Identifu the solutionfollowing ions:
(i) Hydrogen ion :
(ii) Hydroxide ion:
(.) Name an example of solution V.
U nark'l
Distilled water is added to 20.0 cm3 of solution Z to make 100-0 cm3 ofsolution.Calculate the new concentration ofsolution Z-
p narksJ
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(d)
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9
Diagram 4 shows the preparation ofsalt Q.
4541/2SULIT
(e)
Magnesiumcarbonate
.F.,",,;;l-.*F;l.m.EDiagram 4
Answer the following questions based on Diagram 4.
(i) Name salt Q.
ll mark)
State the solubility of salt Q.
, lt markl
Describe briefly how to prepare a solution of mlt Q frommagnesium carbonate.
13 marks]
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SULIT 4541D
Section B[20 rnarks]
Answer any one question from this section.
5. (a) Diagram 5.1 shows the electron arrangement of a molecule XY+. Theletters used do not represent the actual symbols ofthe elements'
Diagram 5.1
Based on Diagram 5.1, write the electron arrangement for atom ofelements X and Y.
. l2 marksl
(b) Table 5 shows the proton numbers ofelements P, Q, R and S.
Element Proton Number
P Ia -,R 6s 8
Table 5
(D Arrange elements Q, R and S in ascending order of atomic size.Explain your answer.
14 narksl
(ii) The reaction between elements Q and S form a chemicalcomPound.Describe the formation ofthis compound'
16 narksl
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10
@@:
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SULIT
SULIT
6.
l1 4s41D
(c) Diagram 52 shows 0rc r€actiol betni'een metal X and watcr' Metal X isa Group 1 elemenl
Water
Diagrarr 52 -
Bi using three named aramples ofGroup I elcments' desoribean
"ip".i--*t to in
"stigarc the rcactivity ofGroup I elements with
water.inlour des"ription include a batanced chemical equation for one of the
thrce reactions involved.
lSnwksl
t2 4541n
Diagram 5.1 shox,s two containers ofchloride sah- The sahs can be preparcdin the school laboratory.
(a)
Lchloride M chloride
Diagram 6.1
L chloride is soluble in water while M chloride is insoluble inwater-Suggest a name for L ohloride and M chloride
(D
Vntksl
(iD State suitabte chemicals for the PreParation for M ohloride indGXr).\lhfte a balanced chemical equation to r€present the reaotion'\ [a narksl
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SULIT 4541D
Diagram 6.2 shows the wastewater from a textild-iactory. The water isfound to be contaminated with hydrochloric aoid.
Diagrara 6.2
Describe an experiment to determine the concentration ofahydrochloric acid solution using titration method. A standard solutionof 0.1 mol dm-3 sodium hydroxide is provided.
In your description show t}e following aspeots:
. A list of materials and apparatuso Procedure of the experiment. A labeled didgram showing the apparatus set-upo Table of resulto All the calculation steps involved
[4 marks]
13
(b)
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For
SULIT
Section C[32 marks]
Answer all questions from this section'
Copper
After 30 minutes
-Diagam 7'l
State the observations that can be made from
min8es:
454112
i
this oxperiment after 30
7. Diagram 7.1 shows the set-up of apprltul-for. an ?xP€rlneT to determine the
p"tiriiJ al*"**e of an electroche#cal cell using zinc and copper as electrodas'
(a)
.:#.{:j-#=_-_-lrit_-_---_-_g----.---'-E*:---':-fi:--.-::-&----:---#--:_-----------_--------j
l-?W:-'=-!W::
:;w;=t%'-:--:-:-:::-::--1r--@::.:---------_----------:-.
ObservationDescription
Zinc elootode
Copper electrode
The copper(Il) zulPhate solution
l3 narks)
sulphatesolution
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SULIT t5 4s4rD
The experiment is repeated by replacing copper with metals P and Q as
electrodes.'Diagram 7.2 shows the voltneter readings of all the experiments'
Zinc I Coppr MetalP I Zinc Zino / Metal Q
Reading: ........ Reading:Reading:
Diagram 7.2
(b) Record the voltmeter readings in the spaces provided in Diagram 7'2'
Il marksl
Construct a table to .""orA tt " voltmeter reading for the different pairs
of metal.
13 narksl
Based-on the experiment, state the
(0 Manipulated variable :
(iD
(iiD
Responding variable :
Constant variable :
13 mula]
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(c)
(d)
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45411216SULIT
(e) State the operational definition for the potential difference in this
experiment.
13 narksl
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SULIT 454tD
8 shows two test tubes containing glaoial ethanoic acid in different
17
Diagramsolvents.
Glacialethanoic acidin water
Clacialethanoic acidin drypropanone
Diagram 8
Based on Diagram 8, plan a laboratory experiment to investigate the solvent thatis needed for glacial ethanoic acid to show its acidic properties.
Your planning should include the following aspects:
(a) Problem statement
(b) AII the variables
(c) Statement ofthe hypotlresis
(d) List of substances and apparatus
(e) Procedure for the experiment .
(0 Tabulation ofdata
|7 narksl
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