XI Part 3 Asam Basa English

7/24/2019 XI Part 3 Asam Basa English

1/16

LESSON PLAN

Level of Study : Senior High School

Subject : Chemistry

Toic : Acid !"se Solution

Subtoic : #egree of $oni%"tion "nd Acid !"se Const"nt

&r"de'Semester : ($'$$

Time Alloc"tion : )*+, minutes

$- STAN#A.T CO/PETENCE :

Understanding the properties of acid base solution, the measurement method and itsapplication.

$$- !AS$C CO/PETENCE :

Describing the acid base theories by determining the solutions properties and calculating the

solutions pH.

$$$- $N#$CATO.

A- Cognitive

0- Product

Explaining the definition of acidity power and conclude the pH measurementresult of some acid and base solution in same concentration

Connecting the strength of acid or base with the degree of ionization ! and the

constant of acid Ka! or the constan of base Kb!

Calculating the pH of acid or base solution that the concentration had been "nown

1- Process 2Study s3ill4 Le"rning str"tegies5

Understanding the definition of acidity power

Conclude the pH measurement result of some acid and base solution in same

concentration

Understanding relationship between the strength of acid or base with the degree ofionization ! and the constant of acid Ka! or the constan of base Kb!

Calculating the pH and the degree of ionization of solution from concentration

data

Communicating their discussion about degree of ionization and acid base constant

!- Affective


2/16

0- Ch"r"cter !eh"viour

#. $recise

%. &pen minded and listen friends opinion'. Help friend that needed

1- Soci"l S3ill

#. (e a good listener%. )s"ing s"ill

'. *i+ing opinion

. -elling information

$6- LEA.N$N& O!7ECT$6ES

A- Cognitive

0- Product

tudent can explain the definition of acidity power and conclude the pH

measurement result of some acid and base solution in same concentration exactly.

tudent can connecting the strength of acid or base with the degree of ionization

! and the constant of acid Ka! or the constan of base Kb! exactly. tudent can calculate the pH of acid or base solution that the concentration had

been "nown exactly.

1- Process

*i+en student handboo" and wor"sheet, student can understanding the definition of

acidity power exactly.

*i+en student handboo" and wor"sheet, student can conclude the pH measurement

result of some acid and base solution in same concentration exactly

*i+en student handboo" and wor"sheet, student can understanding relationship

between the strength of acid or base with the degree of ionization ! and the

constant of acid Ka! or the constan of base Kb! exactly

*i+en student handboo" and wor"sheet, student can calculating the pH and the

degree of ionization of solution from concentration data exactly

*i+en student handboo" and wor"sheet, student can communicate their discussion

about degree of ionization and acid base constant exactly

!- Affective

0- Ch"r"cter !eh"viour

$articipating in -eaching and /earning $rocess, minimal they are +alued in ma"ing

progress in showing character precise, open minded and listen friends opinion, also

help friend that needed

1- Soci"l S3ill


3/16

0n+ol+ed in -eaching and /earning $rocess, student mar"ed ad+ance in social s"ills 1

#. (e a good listener

%. )s"ing s"ill'. *i+ing opinion

. -elling information

6- LEA.N$N& /ATE.$AL

The "cidity o8er

Electrolyte substances that are most ionized called strong electrolyte, while ionize

in a little amount are called wea" electrolyte. -he power of acid and base will be

described in the degree of ionization and the constant of ionization e2ulibrium.

The ioni%"tion degree

-he ionization degree !, is the comparison between the amount of ionized

substances with the first amount of substances

0f the substances ionized perfectly its degree of ionization 3 #. 0f the substances are not

ionized its degree of ionization3 4. o, the +alue of the degree of ionization is 4 5 5 #

The const"nt of "cid ioni%"tion 2Ka5

-he e2uilibrium constant of acid ionization is symbolized byKa. 6or the wea" acid

H) and the formula of ionization constant is li"e this.

The rel"tionshi bet8een the const"nt of "cid ioni%"tion 2Ka5 8ith the degree of

ioni%"tion 2 5

0f the concentration of electrolyte first substance! isM molar, so the e2uation is1

M

mengionyangzatjumlah=

0f the composition of this e2uilibrium is distributed into the e2uation of the constant of

acid e2uilibrium1

mulaulajumlahzatm

gionzatyangmenjumlah

=

[ ] [ ][ ]HA

AHKa

+

=

( )

=

#M

MMK

a


4/16

(y use assumption #7 ! #, so the e2uation abo+e becomes1

M

MMKa

= or

%MKa =

o,M

Ka=

The "l3"linity o8er

-he constant of base ionization 8b!

The rel"tionshi bet8een the const"nt of b"se ioni%"tion "nd the degree of b"se

ioni%"tion1MKb=

C"lcul"ting the Hof "cid solution

-he ways to predict the pH of acid solution based on the concentration and the

relates acidity power.

"5 Strong "cid

0t has been told that the strong acid are ionized perfectly, the pH of solution can

be determined if the concentration of acid is "nown.

b5 9e"3 "cid

9ea" acid dont ionized perfectly, so the concentration of H: cant be related

stochiometricly with the concentration of acid.

&r

c5 Strong b"se

[ ]LOH

OHLKb

+

=

asamvalensiMH =+

[ ] MKH a =+

=+ MH


5/16

)s li"e as strong acid, the pH of strong base solution can be determined only by

"nowing the concentration of base.

d5 9e"3 b"se

-he pH of wea" base solution can be determined in same basic of the

determination of wea" acid pH, if the concentration and the constant of base ionization

or the degree of ionization are "nown. -he relationship of &H7ion concentration with

the degree of ionization and the constant of base 8b! can be written li"e this1

6$- LEA.N$N&/O#EL :

/earning model 1 Cooperati+e

-ype 1 tudent -eams )chie+ement Di+ision -)D!

/earning method 1 Discussion, presentation, lecture and 2uestion and answer

6$$- TOP$C : )cid (ase olution

S!TOP$C : Degree of 0onization and )cid (ase Constant

6$$$- LEA.N$N& ACT$6$T;

A- $ntroduction

Phase 1 : Present Goals and Set

E*lor"tion

#. -eacher relate the topic by gi+ing some 2uestion about the properties of acid base

solution and degree of acidity pH!%. -eacher moti+ate the student by gi+ing 2uestion1

;9hether the acid solution of different types but it has same concentration ha+e the

same degree of acidity pH!=

'. -eacher explain the learning ob?ecti+es to students

!- /"in Activity

Phase 2 : Present Information

El"bor"tion

. -eacher explain outline of matter that will be studied.

basavalensiMOH =

=

MOH [ ] MKH b =+


6/16

@. -eacher inform about learning model that will be used.

Phase 3 : Organize Student into learning team

A. -eacher di+ided students into some groups. Each group consist of four students

heterogeneously.

@. -eacher conditioning students to gather with their groups.

A. -eacher distribute wor"sheet to each student.Phase 4 : Assist teamwork and stud

B. -eacher as" student to start the discussion

. -eacher wal" around and monitoring the acti+ities of students during discussion,

emphasize thatpreciseis re2uired to students

. -eacher guide students in finishing wor"sheet, emphasize help friend that neededis

re2uired to students.

Phase ! : "est o#er materials

#4. -eacher as" student topresentthe result of their discussion in front of the class and

other students become good listener, emphasize that open mindedand listen friendsopinion to student during discussion.

##. -eacher gi+es opportunity student to as" gi+e 2uestion!.#%. -eacher gi+es opportunity student to express their opinionabout answer of other

friend.

C- Closure

Phase $: Pro#ide re%ognition

#'. -eacher gi+es reward for the best group, great group and super group.

Confirm"tion

#. -eacher gi+e feedbac" to the learning material

#@. -eacher guide students to ma"e summary or conclusion of this matter

#A. -eacher end the learning process.

$(- LEA.N$N& SO.CE

#. tudent handboo"%. 9or"sheet

'. 9hite board and boardmar"er

(- ASSES/ENT

#. $roduct

%. $rocess'. Character (eha+iour

. ocial s"ill

*resi", #B uly %4##


7/16

8nown,

Head Faster of F)G # Fanyar Chemistry -eacher

Drs. H. F. yafaul )nam, FF

G0$. #A@4%4B#4'#4#% G0$.

WORKSHEET

Game 1 .............................................


8/16

Class 1 .............................................

)bsent Gumber 1 ..........................................

0. tandart Competence 1

Understanding the properties of acid base solution, the measurement method and its

application.

00. (asic Competence 1

Describing the acid base theories by determining the solutions properties and calculating the

solutions pH.

000. 0ndicator 1 Explaining the definition of acidity power and conclude the pH measurement result of

some acid and base solution in same concentration

Connecting the strength of acid or base with the degree of ionization ! and the

constant of acid Ka! or the constan of base Kb!

Calculating the pH of acid or base solution that the concentration had been "nown

.e"d your boo3 c"refully4 "nd then "ns8er this ormul" ? "

#.

%.

'.

.

@.

A.

)cetic acid

(enzoic acid

6ormic acid

6enol

Cyanide acid

6loric acid

CH'C&&H

CAH@C&&H

HC&&H

CAH@&H

HCG

H6

#, x #47@

A,@ x #47@

#, x #47

#,' x #47#4

, x #47#4

A, x #47

'. -he ionization constant of an acid is #.#47@. How many percent this acid ionized in the

solution that ha+e concentration1

a. 4,# m b. 4,4# F c. 4,44 F


9/16

. How are the effect of watery for the degree of ionization

Documents

XI Part 3 Asam Basa English