Acids Quiz #1 Properties of Acids and BasesStrength

1. Drano®, a commercial product used to clean drains, contains small bits of aluminum metal and

A. ammonia

B. acetic acid

C. hydrochloric acid

D. sodium hydroxide

2. A net ionic equation for the reaction between CH₃COOH and KOH is

A. CH₃COOH_(aq) + K⁺_(aq) ⇄ CH₃COOK_(aq)

B. CH₃COOH_(aq) + OH^-_(aq) ⇄ H₂O_(l) + CH₃COO^-_(aq)

C. CH₃COOH_(aq) + KOH_(aq) ⇄ H₂O_(l) + CH₃COOK_(aq)

D. CH₃COOH_(aq) + K⁺_(aq) + OH^-_(aq)⇄ H₂O_(l) + KCH₃COO_(aq)

3. Which equation represents a neutralization reaction?

A. Pb2+(aq) + 2Cl-(aq) → PbCl2(s)

B. HCl_(aq) + NH_3(aq) → NH₄Cl_(aq)

C. BaI_2(aq) + MgSO_4(aq) → BaSO_4(s) + MgI_2(aq)

D. MnO₄^-_{(aq) +} 5Fe²⁺_(aq) +8H⁺_(aq) → Mn²⁺_(aq) + 5Fe³⁺_(aq) + 4H₂O_(l)

4. An Arrhenius acid is a substance that

A. accepts a proton

B. donates a proton

C. produces H⁺ in solution

D. produces OH^- in solution

5. Consider the following data table:

Breaker	Volume	Contents
1	15 mL	0.1 M Sr(OH)2
2	20 mL	0.2 M NH4OH
3	25 mL	0.1 M KOH
4	50 mL	0.2 M NaOH

Identify the beaker that requires the smallest volume of 1.0 M HCl for complete neutralization

A. Beaker 1

B. Beaker 2

C. Beaker 3

D. Beaker 4

6. The net ionic equation for the titration of HClO_4(aq) with LiOH_(aq) is

A. H⁺_(aq) + OH^-_(aq) → H₂O_(l)

B. HClO_4(aq) + OH^-_(aq) → ClO₄^-_(aq) + H₂O_(l)

C. HClO_4(aq) + LiOH_(aq) → LiClO_4(aq) + H₂O_(l)

D. H⁺_(aq) + ClO₄^-_(aq) + Li⁺_(aq) + OH^-_(aq) → LiClO_4(aq) + H₂O_(l)

7. The equilibrium constant expression for a sulphurous acid is

A K_a = [H⁺][HSO₃^-]

B. K_a = [H⁺][HSO₃^-]

[H₂SO₃]

C. K_a = [2H⁺][SO₃^2-]

[H₂SO₃]

D. K_a = [H⁺][SO₃^2-]

[H₂SO₃]

8. To distinguish between a strong acid and a strong base, an experimenter could use

A. odor

B. magnesium

C. a conductivity test

D. the common ion test

9. How many acids from the list below are known to be weak acids?

HCl, HF, H₂SO₃, H₂SO₄, HNO₃, HNO₂

A. 2

B. 3

C. 4

D. 5

10. There are two beakers on a laboratory desk. One beaker contains 1.0 M HCl and

the other contains tap water. To distinguish the acid solution from the water, one

would use

A. a piece of copper.

B. a piece of magnesium

C. phenolphthalein indicator

D. a piece or red litmus paper

11. Caustic soda, NaOH, is found in

A. fertilizers

B. beverages

C. toothpaste

D. oven cleaners

12. Which of the following is the strongest acid?

A. Acetic acid

B. Oxalic acid

C. Benzoic acid

D. Carbonic acid

13. The acid used in the lead-acid storage battery is

A. HCl

B. HNO₃

C. H₂SO₄

D. CH₃COOH

14. A definition for a Brønsted-Lowry acid should contain which of the following

phrases?

A. the donation of H⁺

B. the donation of OH^-

C. the acceptance of H⁺

D. the acceptance of OH^-

15. What species will form when H⁺ ions are in the presence of H₂O molecules?

A. HO⁺

B. HO₂⁺

C. H₃O⁺

D. H₂O₂

16. What is the conjugate acid of the base HAsO₄^2-?

A. AsO₄^3-

B. H₂AsO₄^2-

C. H₂AsO₄^-

D. H₃AsO₄

17. What species is the hydronium ion?

A. HO⁺

B. HO₂⁺

C. H₂O₂

D. H₃O⁺

18. Which of the following is a characteristic of acidic solutions?

A. They accept H⁺ ions.

B. They have a pH more than 7.

C. They react with Mg to produce H₂ gas.

D. They turn limus blue.

19. Which of the following is a common base found in drain cleaners?

A. bleach

B. vinegar

C. milk of magnesia

D. sodium hydroxide

20. Which of the following is a characteristic of basic solutions?

A. They donate H⁺ ions.

B. They have a pH less than 7.

C. They feel slippery.

D. They turn limus red.

21. Which of the following is the weakest acid?

A. Acetic acid

B. Oxalic acid

C. Benzoic acid

D. Carbonic acid

22. What is the main difference between a strong acid and a weak acid?

A. their degree of ionization

B. their reactivity with platinum

C. their concentration in solution

D. their effect on an indicator

23. Which of the following best describes an acidic solution?

Litmus Colour Reaction with Zn

A. red reaction

B. red no reaction

C. blue no reaction

D. blue reaction

24. Identify the common acid found in the stomach.

A. benzoic acid

B. sulphuric acid

C. perchloric acid

D. hydrochloric acid

25. Which of the following best describes an basic solution?

Litmus Colour pH

A. red less than 7

B. red more than 7

C. blue less than 7

D. blue more than 7

26. Which of the following is a general characteristic of Arrhenius acids?

A. They produce H⁺ in solution.

B. They accept an H⁺ from water.

C. They turn bromothymol blue a blue colour.

D. They react with H₃O⁺ ions to produce H₂.

27. Identify a conjugate pair from the equilibrium provided:

PO₄^3- + HCO₃^- ⇌ HPO₄^2- + CO₃^2-

A. CO₃^2- and HPO₄^2-

B. PO₄^3- and HCO₃^-

C. PO₄^3- and HPO₄^2-

D. HCO₃^- and HPO₄^2-

28. Which of the following best describes a weak acid?

A. pH = 10

B. It may be very soluble, but only partly ionized.

C. It must be very soluble and completely ionized.

D. It must be of low solubility and completely ionized.

29. Which of the following is a common property of acid solutions?

A. They have a pH > 7.

B. They turn red litmus blue.

C. They have a slippery feeling.

D. They turn pink phenolphthalein colourless.

30. What is a general characteristic of bases?

A. They all donate H⁺.

B. They all accept OH^- .

C. They will neutralize acids

D. They will react with acids to produce H₂ gas.