Free Printable Optional Review: Aqueous Solutions

1.

Which solution would be least likely to conduct an electric current?

a)

NaCl

b)

HCl

c)

C₆H₁₂O₆

d)

NH₄Cl

2.

A solute that conducts electricity when dissolved in water is called a(n)

a)

electrolyte

b)

nonelectrolyte

c)

heterogeneous solution

3.

What is a solute?

a)

The substance that does the dissolving in a solution.

b)

The substance that is dissolved into the solution.

c)

The mixing of different substances.

d)

The process in which neutral molecules lose or gain electrons

4.

What is a solvent?

a)

The substance that does the dissolving in a solution.

b)

The substance that is being dissolved in a solution.

c)

The mixing of different substances.

d)

The process in which neutral molecules lose or gain electrons

5.

Solutions in which electric currents cannot run through are said to be

a)

noncolloidal

b)

electrolytes

c)

nonelectrolytes

d)

conductors

6.

Which of the following compounds is SOLUBLE? (Think: SNAP)

a)

copper carbonate

b)

calcium carbonate

c)

potassium carbonate

d)

strontium carbonate

7.

When solid NaCl is stirred into water, which of the following is NOT true?

a)

Individual sodium and chloride ions are present.

b)

The solution will conduct electricity.

c)

The solution will taste salty.

d)

The NaCl will fail to dissociate (separate into ions)

8.

In writing the chemical equation for a reaction that produces a precipitate, what abbreviation of the physical state must appear with one of the products?

a)

(s)

b)

(g)

c)

(l)

d)

(w)

9.

What would be the formula of the precipitate that forms when Pb(NO₃)₂(aq) and K₂SO₄ (aq) are mixed?

a)

K(NO₃)₂

b)

PbSO₄

c)

PbK₂

d)

H₂O

10.

Which is the correct net ionic equation for the reaction of AgNO₃ and CaCl₂?

a)

Ca²⁺(aq) + 2Cl^- (aq) → CaCl(s)

b)

Ag⁺(aq) + Cl^- (aq) → AgCl(s)

c)

Ag + Cl → AgCl

d)

Ag⁺+ Ca²⁺ →Ag₂Ca (s)

11.

What are the spectator ions in the reaction of sodium chloride with silver nitrate? (Assume all answer choices are ions (charged))

a)

silver and nitrate

b)

sodium and chloride

c)

sodium and nitrate

d)

silver and chloride

12.

What are the spectator ions in this reaction?
CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)

a)

Cu²⁺ and OH^1-

b)

Na²⁺ and Cl^2-

c)

Na¹⁺ and Cl^1-

d)

Na¹⁺ and OH^1-

13.

What is the result of the reaction between potassium bromide and ammonium sulfide?

a)

potassium sulfide precipitates

b)

ammonium bromide precipitates

c)

potassium ammonium precipitates

d)

no precipitate is formed (no reaction)

14.

What is the net ionic equation for the reaction between K₃PO_{4 (aq)} and CuSO_{4 (aq)}?

a)

2 K⁺_(aq) + SO₄^2-_(aq) → K₂SO_{4 (s)}

b)

K⁺_(aq) + SO₄^2-_(aq) → KSO_{4 (s)}

c)

2 Cu²⁺_(aq) + 3 PO₄^3-_(aq) → Cu₃(PO₄)_{2 (s)}

d)

Cu²⁺_(aq) + PO₄^3-_(aq) → CuPO_{4 (s)}

15.

What is a precipitation reaction?

a)

A reaction where two solutions are mixed to form an insoluble solid (precipitate).

b)

A reaction that occurs when a gas is produced from a liquid solution.

c)

A reaction that involves the absorption of heat, resulting in a temperature decrease.

d)

A reaction that occurs when two solids are combined to form a liquid.

16.

Classify as an Acid, Base, Covalent Molecule or Salt: NaOH

a)

Acid

b)

Base

c)

Salt

d)

Covalent Molecule

17.

Classify as an Acid, Base, Covalent Molecule or Salt: Na₂SO₄

a)

Acid

b)

Base

c)

Salt

d)

Covalent Molecule

18.

Classify as an Acid, Base, Covalent Molecule or Salt: H₂SO₄

a)

Acid

b)

Base

c)

Salt

d)

Covalent Molecule

19.

Classify as an Acid, Base, Covalent Molecule or Salt: CaCl₂

a)

Acid

b)

Base

c)

Salt

d)

Covalent Molecule

20.

Classify as an Acid, Base, Covalent Molecule or Salt:: CCl₄

a)

Acid

b)

Base

c)

Salt

d)

Covalent Molecule

21.

Calcium Chloride, CaCl₂

a)

Soluble Salt

b)

Insoluble Salt

22.

Calcium Carbonate, CaCO₃

a)

Soluble Salt

b)

Insoluble Salt

23.

Which of the following is the correct definition for a strong acid?

a)

Partially dissociates into ions when dissolved in water and the change is not reversible

b)

Fully dissociates into ions when dissolved in water and the change is not reversible

c)

Fully dissociates into ions when dissolved in water and the change is reversible

d)

Partially dissociates into ions when dissolved in water and the change is reversible

24.

Which of the following is a strong acid?

a)

Ethanoic acid

b)

Nitric acid

c)

Carbonic acid

d)

Citric acid

25.

Strong acids and bases...

a)

do not break apart into ions (non-electrolyte)

b)

partially break apart into ions (weak electrolyte)

c)

completely break apart into ions (non-electrolyte)

d)

completely break apart into ions (strong electrolyte)

26.

Which of the following is NOT a strong base

a)

$Be\left(OH\right)_2$

b)

$CsOH$

c)

KOH

d)

NaOH

27.

Name the following in order:
HCl, HBr, HI

a)

hydrochloric acid, hydrobromic acid, hydroiodic acid

b)

chloric acid, bromic acid, iodic acid

c)

chlorous acid, bromous acid, iodous acid

d)

hydrochlorous acid, hydrobromous acid, hydroiodous acid

28.

What is the fomula of carbonic acid?

a)

H₂CO₃

b)

H₂CrO₄

c)

H₂C₂O₄

d)

HCO₃

29.

What is the formula of chlorous acid?

a)

HClO₃

b)

HClO₂

c)

HClO

d)

HCl

30.

The correct name of the acid with the chemical formula HI is ___.

a)

iodic acid

b)

hydroiodic acid

c)

iodous acid

d)

hypoiodous acid

31.

What is the formula for perchloric acid?

a)

H₃ClO₃

b)

H₃ClO₄

c)

HClO₃

d)

HClO₄

32.

State the name of the acid with the formula HC₂H₃O₂

a)

acetic acid

b)

acetous acid

c)

hydrogen acetate

d)

hydrogen dicarbon trihydrogen dioxygen

33.

What is the formula for phosphoric acid?

a)

HPO₃

b)

H₃PO₄

c)

H₂PO₄

d)

H₃PO₃

34.

What is the oxidation number of N in NO₂^1-?

a)

-3

b)

+4

c)

-2

d)

+3

35.

If an atom loses electrons during a chemical reaction, the atom was:

a)

Oxidized

b)

Reduced

c)

Neutralized

d)

Precipitated

36.

What is oxidation number of Mn in MnO₂ ?

a)

0

b)

+2

c)

-2

d)

+4

37.

What is oxidation number of Cr in
Cr₂O₇^2-?

a)

-2

b)

+2

c)

+6

d)

+12

38.

What is oxidation number of P in K₃PO₄?

a)

+1

b)

+5

c)

-2

d)

0

39.

Oxidation number of O in the compound H₂O₂. This compound is named hydrogen peroxide.

a)

0

b)

-1

c)

-2

d)

+2

40.

Oxidation number of Fe in Fe₂O₃:

a)

0

b)

-2

c)

+2

d)

+3

41.

Oxidation number of H in NaH:

a)

0

b)

+1

c)

-1

d)

+2

42.

What is the oxidation state of H in H₂?

a)

+2

b)

+1

c)

0

d)

None of the above

43.

What is the oxidation number of H in H₂O?

a)

-1

b)

+1

c)

+2

d)

-2

44.

A decrease in oxidation number.

a)

concentrated

b)

reduction

c)

oxidation

d)

dilute

45.

In the reaction
2Ca(s) + O₂(g) --> 2CaO(s), calcium is __________

a)

Reduced

b)

Synthesized

c)

Oxidized

d)

None of the above

46.

In a redox reaction, spectator ions...

a)

become oxidised

b)

become reduced

c)

remain unchanged

47.

In the reaction Zn + H₂O --> ZnO₂ + H₂
which element, if any, is oxidized?

a)

Zinc

b)

Hydrogen

c)

Oxygen

d)

None

48.

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

a)

Iron

b)

Fluorine

c)

Oxygen

49.

A chemical reaction that involves a gain/loss of electrons is called:

a)

Double Replacement

b)

Neutralization

c)

Oxidation-Reduction

d)

Hydrolysis

50.

If in a reaction, a substance is reduced; its number of electrons has:

a)

Increased

b)

Decreased

c)

Remained Constant

d)

Varies Randomly

51.

What is happening to the chemical in bold?

Nickel + oxygen --> nickel oxide

a)

Oxidation

b)

Reduction

52.

Another name for a "oxidation-reduction" reaction is

a)

chemical reaction

b)

neutralization reaction

c)

redox reaction

d)

nuclear reaction

53.

What is the oxidation state of free elements?

a)

Three

b)

Zero

c)

One

d)

Two

54.

What is a neutralization reaction?

a)

A reaction between two acids that produces a gas.

b)

A reaction between an acid and a base that produces water and a salt.

c)

A reaction that occurs only in aqueous solutions.

d)

A reaction that involves the combination of two bases.

55.

What is the difference between strong and weak bases?

a)

Strong bases partially dissociate in water, while weak bases completely dissociate.

b)

Strong bases do not dissociate in water, while weak bases do.

c)

Strong bases completely dissociate in water, while weak bases partially dissociate.

d)

Strong bases and weak bases dissociate equally in water.

56.

Classify the reaction: $AgNO_3(aq) + NaCl(aq) \rightarrow AgCl(s) + NaNO_3(aq)$

a)

Acid-Base Neutralization

b)

Precipitation Reaction

c)

Redox Reaction

57.

Classify the reaction: $HCl(aq) + NaOH(aq) \rightarrow NaCl(aq) + H_2O(l)$

a)

Redox Reaction

b)

Precipitation Reaction

c)

Acid-Base Neutralization

58.

Classify the reaction: $2KI(aq) + Pb(NO_3)_2(aq) \rightarrow 2KNO_3(aq) + PbI_2(s)$

a)

Redox Reaction

b)

Precipitation Reaction

c)

Acid-Base Neutralization

59.

Classify the reaction: $H_2SO_4(aq) + 2NaOH(aq) \rightarrow Na_2SO_4(aq) + 2H_2O(l)$

a)

Precipitation Reaction

b)

Redox Reaction

c)

Acid-Base Neutralization

60.

Classify the reaction: $Fe(s) + CuSO_4(aq) \rightarrow FeSO_4(aq) + Cu(s)$

a)

Redox Reaction

b)

Acid-Base Neutralization

c)

Precipitation Reaction

61.

Classify the reaction: $2H_2O_2(aq) \rightarrow 2H_2O(l) + O_2(g)$

a)

Acid-Base Neutralization

b)

Precipitation Reaction

c)

Redox Reaction

62.

Classify the reaction: $CaCl_2(aq) + Na_2CO_3(aq) \rightarrow CaCO_3(s) + 2NaCl(aq)$

a)

Acid-Base Neutralization

b)

Precipitation Reaction

c)

Redox Reaction

63.

Classify the reaction: $2Na(s) + Cl_2(g) \rightarrow 2NaCl(s)$

a)

Redox Reaction

b)

Precipitation Reaction

c)

Acid-Base Neutralization

64.

Classify the reaction: $2HCl(aq) + Zn(s) \rightarrow ZnCl_2(aq) + H_2(g)$

a)

Acid-Base Neutralization

b)

Precipitation Reaction

c)

Redox Reaction

65.

Classify the reaction: $2KBr(aq) + Cl_2(g) \rightarrow 2KCl(aq) + Br_2(l)$

a)

Redox Reaction

b)

Acid-Base Neutralization

c)

Precipitation Reaction

66.

Classify the reaction: $Na_2SO_4(aq) + BaCl_2(aq) \rightarrow 2NaCl(aq) + BaSO_4(s)$

a)

Precipitation Reaction

b)

Redox Reaction

c)

Acid-Base Neutralization

67.

Which sweet tea would you expect to taste the sweetest?

a)

1M

b)

3M

c)

3.1M

d)

2.5M

68.

If you have 0.045 L of 0.465 M potassium bromide. How many moles of potassium bromide are present?

a)

20.9 mol

b)

0.021 mol

c)

0.02 mol

d)

0.0209 mol

69.

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to 500 mL?

a)

300. M

b)

31.3 M

c)

3.13 M

d)

1.56 M

70.

True or False? The higher the concentration of a solution the less solutes it has in it.

a)

True

b)

False

71.

How many grams of AgNO₃ (MM = 169.87) are needed to prepare 0.125M solution in 250 mL of water?

a)

.03g

b)

0.5g

c)

5.3g

d)

84.9g

72.

Another term for an ionic compound is

a)

salt

b)

HOH

c)

covalent molecule

d)

weak acid

73.

What is the oxidation state of sulfur in Al₂(SO₄)₃

*Remember: "UMHOE"

a)

-2

b)

+6

c)

+18

d)

-6

Optional Review: Aqueous Solutions

Total questions: 73

Worksheet time: 3hrs 39mins

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