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first . . . that is why its called review . . .first . . . that is why its called review . . . If you put a signed piece of paper in the top shelf of papers If you put a signed piece of paper in the top shelf of papers

to grade which says “MungaDinga Lunchbox” you will to grade which says “MungaDinga Lunchbox” you will receive extra credit on the examreceive extra credit on the exam

1. Which of the following is 1. Which of the following is the best conductor of the best conductor of

electricity?electricity?NaCl (s)NaCl (s)

NaCl (aq)NaCl (aq)CC66HH1212OO66 (s) (s)

CC66HH1212OO66 (aq) (aq)

NaCl (aq)NaCl (aq)

2. Which solution is the best 2. Which solution is the best conductor of electricity?conductor of electricity?

0.1 M HNO0.1 M HNO33

0.1 M CH0.1 M CH33COOHCOOH

0.1 M C0.1 M C66HH1212OO66

0.1 M C0.1 M C22HH55OHOH

3. What happens to the conductivity 3. What happens to the conductivity of a solution if KCl is added to a of a solution if KCl is added to a

saturated solution of KCl?saturated solution of KCl?

4. In a 0.01 M solution of HCl, blue 4. In a 0.01 M solution of HCl, blue litmus will do what?litmus will do what?

5. In the below reaction, which 5. In the below reaction, which quantity would be considered the quantity would be considered the

proton doner?proton doner?

HF + HHF + H22O O H H33OO++ + F + F--

6. The conjugate base of NH6. The conjugate base of NH33 is is

NONO22--

NONO33--

NHNH22--

NHNH33

7. A 0.1 M acid solution at 298 K 7. A 0.1 M acid solution at 298 K would conduct electricity best if the would conduct electricity best if the

acid had a Kacid had a Kaa value value

1 x 101 x 10-7-7

1.7 x 101.7 x 10-2-2

6.6 x 106.6 x 10-4-4

1.8 x 101.8 x 10-5-5

Pure water is similar to 1.0 M HCl in Pure water is similar to 1.0 M HCl in that they boththat they both

Contain HContain H33OO++

Are neutral to litmusAre neutral to litmus Have a pH higher Have a pH higher

than 7than 7 Are good conductors Are good conductors

of electricityof electricity

According to the Bronsted-Lowry According to the Bronsted-Lowry theory, an acid is any species that theory, an acid is any species that

can . . . can . . .

When tested, a solution turns red When tested, a solution turns red litmus to blue. This indicates that litmus to blue. This indicates that the solution contains two types of the solution contains two types of

ion. Which ion is more abundant?ion. Which ion is more abundant?

What will water become if it acts as What will water become if it acts as a base?a base?

H3O+

12. In the reaction below is water an 12. In the reaction below is water an acid, a base, or both?acid, a base, or both?

HH22O + HO + H22O O H H33OO++ + OH + OH--

BOTH

Which salt will hydrolyze in water to Which salt will hydrolyze in water to create a basic solution?create a basic solution?

NaNONaNO22

CaClCaCl22

BaIBaI22

MgSOMgSO44

What does this mean?

React each with water . . If the product is a strong base and a weak acid, it will be a basic solution.

NaNO2 + H2O NaOH + HNO2

How many mL of 1.0 M HHow many mL of 1.0 M H22SOSO44 are are

needed to exactly neutralize 15 mL needed to exactly neutralize 15 mL of 2.0 M Ba(OH)of 2.0 M Ba(OH)22??

30-mL

Note the mole ratio is

2:2

As 50-mL of 0.1 M HCl is added to As 50-mL of 0.1 M HCl is added to 100-mL of 0.1-M NaOH, the pH of 100-mL of 0.1-M NaOH, the pH of

the NaOH will do what?the NaOH will do what?

16. Write a chemical equation that 16. Write a chemical equation that would represent a neutralization would represent a neutralization

reaction.reaction.

A water solution contains 0.50 moles A water solution contains 0.50 moles of HCl. How many moles KOH of HCl. How many moles KOH

should be needed to neutralize the should be needed to neutralize the acid?acid?

How many grams does that represent?How many grams does that represent?

0.50 moles

28.5-g

18. What is the pH of a solution if 18. What is the pH of a solution if the HYDROXIDE ion concentration the HYDROXIDE ion concentration

is 1 x 10is 1 x 10-4-4 moles per liter? moles per liter?

10

What is the [HWhat is the [H33OO++] of a 0.001 M HCl ] of a 0.001 M HCl

solution?solution?

1.0 x 10-3

20. Write the K20. Write the Kaa equation for the equation for the

following reaction:following reaction: HNOHNO22 (aq) = H (aq) = H++ (aq) + NO (aq) + NO22

-- (aq) (aq)

You find an unknown solution in the You find an unknown solution in the lablab

What characteristics will it have if it is a base? What characteristics will it have if it is a base? What characteristics will it have if it is an acid?What characteristics will it have if it is an acid?

22. What materials will you need if 22. What materials will you need if you are going to do titration to see you are going to do titration to see

what the concentration of the what the concentration of the chemical is?chemical is?

The chemical turns methyl orange a The chemical turns methyl orange a dark red color.dark red color.