25) Which of these pH numbers indicates the highest level of acidity?

A5

B8

C10

D12

26) Which pH indicates a basic solution?

A1

B5

C7

D12

27)

Given the following solutions:

Solution A: pH of 10

Solution B: pH of 7

Solution C: pH of 5

Which list has the solutions placed in order of increasing H+ concentration?

A

A, B, C

B

B, A, C

C

C, A, B

D

C, B, A

28) Which of the following pH values indicates the highest concentration of hydronium ions in a solution?

ApH = 1

BpH = 2

CpH = 3

DpH = 4

29) As HCl(g) is added to water, the pH of the water solution

Adecreases

Bincreases

Cremains the same

30) What is the pH of a 0.0001 M aqueous solution of HCl?

A1

B2

C3

D4

31) What is the pH of a 0.001 M HNO3 solution?

A1

B2

C3

D11

32) The [H3O+] of a solution is 1 × 10–8. This solution has a pH of

A6, which is acidic

B8, which is basic

C6, which is basic

D8, which is acidic

33) The H3O+ ion concentration of a solution is 1 × 10–4 mole per liter. This solution is

Aacidic and has a pH of 4

Bacidic and has a pH of 10

Cbasic and has a pH of 4

Dbasic and has a pH of 10

34) The pH of 0.001M HCl is

A1

B2

C3

D4

35)

Phenolphthalein is pink in an aqueous solution having a pH of

A

5

B

2

C

7

D

12

36)

What is the color of the indicator thymol blue in a solution that has a pH of 11?

A

red

B

blue

C

pink

D

yellow

37) Three samples of the same solution are tested, each with a different indicator. All three indicators, bromthymol blue, bromcresol green and thymol blue, appear blue if the pH of the solution is

A4.7

B6.0

C7.8

D9.9

38) Based on the results of testing colorless solutions with indicators, which solution is most acidic?

Aa solution in which bromthymol blue is blue

Ba solution in which bromcresol green is blue

Ca solution in which phenolphthalein is pink

Da solution in which methyl orange is red

39)

Which indicator would best distinguish between a solution with a pH of 3.5 and a solution with a pH of 5.5

A

bromthymol blue

B

bromcresol green

C

litmus

D

thymol blue

40) Which indicator is blue in a solution that has a pH of 5.6?

Abromcresol green

Bbromthymol blue

Cmethyl orange

Dthymol blue

41) Which indicator, when added to a solution, changes color from yellow to blue as the pH of the solution is changed from 5.5 to 8.0?

Abromcresol green

Bbromthymol blue

Clitmus

Dmethyl orange

42)

The table below shows the color of the indicators methyl orange and litmus in two samples of the same solution.

Which pH value is consistent with the indicator results?

A

1

B

5

C

3

D

10

43) In which 0.01 M solution is phenolphthalein pink?

ACH3OH(aq)

BCa(OH)2(aq)

CCH3COOH(aq)

DHNO3(aq)

44) Which indicator is yellow in a solution with a pH of 9.8?

Amethyl orange

Bbromthymol blue

Cbromcresol green

Dthymol blue

45) In which solution will thymol blue indicator appear blue?

A0.1 M CH3COOH

B0.1 M KOH

C0.1 M HCl

D0.1 M H2SO4

46) According to Reference Table M, what is the color of the indicator methyl orange in a solution that has a pH of 2?

Ablue

Byellow

Corange

Dred

47) Which solution when mixed with a drop of bromthymol blue will cause the indicator to change from blue to yellow?

A0.1 M HCl

B0.1 M NH3

C0.1 M CH3OH

D0.1 M NaOH

48)

According to one acid-base theory, NH3 acts as a base when an NH3 molecule

A

accepts an ion

B

donates an ion

C

accepts an ion

D

donates an ion

49)

Given the diagram representing a reaction:


According to one acid-base theory, the water acts as

A

a base because it accepts an H+

B

a base because it donates an H+

C

an acid because it accepts an H+

D

an acid because it donates an H+

50)

Given the balanced equation representing a reaction:


According to one acid-base theory, the H2O() molecules act as

A

a base because they accept H+ ions

B

a base because they donate H+ ions

C

an acid because they accept H+ ions

D

an acid because they donate H+ ions