Question 1

Which of the following statements best describes a strong electrolyte in aqueous solution?

Accepted Answer

It completely dissociates into ions when dissolved in water.

Question 2

Which of the following compounds is a nonelectrolyte when dissolved in water?

Accepted Answer

C\_{12}H\_{22}O\_{11}

Question 3

A student mixes aqueous solutions of Pb(NO\_{3})\_{2} and KCl. What is the net ionic equation for the precipitation reaction that occurs?

Accepted Answer

$$\mathrm{Pb$$^{2+}$$(aq) + 2Cl$$^{-}$$(aq) \rightarrow PbCl_{2}(s)}$$

Question 4

Which of the following is a correct molecular equation for the neutralization of hydrochloric acid with sodium hydroxide?

Accepted Answer

$$\mathrm{HCl(aq) + NaOH(aq) \rightarrow H$$_{2}$$O(l) + NaCl(aq)}$$

Question 5

Which of the following is a strong acid and strong electrolyte?

Accepted Answer

H\_{2}SO\_{4}

Question 6

What is the oxidation number of sulfur in H\_{2}SO\_{4}?

Accepted Answer

+6

Question 7

Which of the following reactions is a redox reaction?

Accepted Answer

$$\mathrm{Na(s) + Cl_{2}(g) \rightarrow 2NaCl(s)}$$

Question 8

A solution is prepared by dissolving 55.6 g of HCl in enough water to make 750 mL of solution. What is the molarity of the solution? (Molar mass of HCl = 36.46 g/mol)

Accepted Answer

2.04 M

Question 9

Which of the following combinations will result in a precipitate when mixed?

Accepted Answer

Copper(II) chloride and sodium carbonate

Question 10

What is the net ionic equation for the reaction between Na\_{2}CO\_{3}(aq) and 2HNO\_{3}(aq)?

Accepted Answer

$$\mathrm{CO_{3}^{2-}(aq) + 2H$$^{+}$$(aq) \rightarrow CO_{2}(g) + H$$_{2}$$O(l)}$$

Question 11

A 0.200 L sample of 15.0 M NaOH is diluted to obtain a 3.00 M solution. What is the final volume?

Accepted Answer

1.00 L

Question 12

Which of the following is a correct statement about solubility rules?

Accepted Answer

All compounds containing nitrate (NO\_{3}^{-}) are soluble.

Question 13

Which of the following is a weak acid and weak electrolyte?

Accepted Answer

CH\_{3}COOH

Question 14

What is the molarity of a solution made by dissolving 1000 mg of CaCO\_{3} (molar mass = 100.09 g/mol) in enough water to make 250 mL of solution?

Accepted Answer

0.040 M

Question 15

Which of the following is the correct complete ionic equation for the reaction between Na\_{2}SO\_{4}(aq) and BaCl\_{2}(aq)?

Accepted Answer

$$\mathrm{2Na$$^{+}$$(aq) + SO_{4}^{2-}(aq) + Ba$$^{2+}$$(aq) + 2Cl$$^{-}$$(aq) \rightarrow BaSO_{4}(s) + 2Na$$^{+}$$(aq) + 2Cl$$^{-}$$(aq)}$$

Question 16

A 25.0 mL sample of 0.20 M HBr solution is titrated with 0.10 M NaOH. What volume of NaOH is required to reach the equivalence point?

Accepted Answer

50.0 mL

Question 17

Which of the following best describes the role of spectator ions in a chemical reaction?

Accepted Answer

They are present in solution but do not change during the reaction.

Question 18

Which of the following is the correct net ionic equation for the neutralization of HCl(aq) with NaOH(aq)?

Accepted Answer

$$\mathrm{H$$^{+}$$(aq) + OH$$^{-}$$(aq) \rightarrow H$$_{2}$$O(l)}$$

Question 19

Which of the following statements about bases is correct?

Accepted Answer

Bases increase the concentration of $$OH^{-}$$ ions in water.

Reactions in Aqueous Solution: Electrolytes, Nonelectrolytes, and Solution Chemistry

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