Question 1

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

Accepted Answer

It completely ionizes and is a good conductor of electricity.

Question 2

Which of the following compounds is a non-electrolyte when dissolved in water?

Accepted Answer

$\mathrm{CH_3OH}$

Question 3

What is the net ionic equation for the reaction between aqueous solutions of $\mathrm{AgNO_3}$ and $\mathrm{NaI}$?

Accepted Answer

$\mathrm{Ag^+(aq) + I^-(aq) \rightarrow AgI(s)}$

Question 4

According to the solubility guidelines, which of the following compounds is insoluble in water?

Accepted Answer

$\mathrm{PbCl_2}$

Question 5

Which of the following is a correct net ionic equation for the neutralization of acetic acid with sodium hydroxide?

Accepted Answer

$\mathrm{CH_3COOH(aq) + OH^-(aq) \rightarrow CH_3COO^-(aq) + H_2O(l)}$

Question 6

Which of the following statements about acids and bases is correct according to the Brønsted-Lowry definition?

Accepted Answer

An acid is a substance that donates a proton ($\mathrm{H^+}$).

Question 7

A solution is prepared by dissolving $0.0050$ mol of $\mathrm{MgCl_2}$ in $1.0$ L of water. What is the concentration of chloride ions in the solution?

Accepted Answer

$0.0100$ M

Question 8

Which of the following reactions is responsible for the erosion of marble statues by acid rain?

Accepted Answer

$\mathrm{CaCO_3(s) + 2H^+(aq) \rightarrow Ca^{2+}(aq) + H_2O(l) + CO_2(g)}$

Question 9

Which of the following is the correct oxidation half-reaction for the reaction $\mathrm{Zn(s) + Cu^{2+}(aq) \rightarrow Zn^{2+}(aq) + Cu(s)}$?

Accepted Answer

$\mathrm{Zn(s) \rightarrow Zn^{2+}(aq) + 2e^-}$

Question 10

In the reaction $\mathrm{Fe_2O_3(s) + 3CO(g) \rightarrow 2Fe(l) + 3CO_2(g)}$, which species is reduced?

Accepted Answer

$\mathrm{Fe_2O_3(s)}$

Question 11

Which of the following is a correct statement about oxidation and reduction?

Accepted Answer

Oxidation is the loss of electrons; reduction is the gain of electrons.

Question 12

Which of the following is a spectator ion in the reaction $\mathrm{AgNO_3(aq) + NaI(aq) \rightarrow AgI(s) + NaNO_3(aq)}$?

Accepted Answer

$\mathrm{Na^+}$

Question 13

Which of the following best explains why $\mathrm{CH_3COOH}$ is a weak electrolyte?

Accepted Answer

It only partially ionizes in water.

Question 14

Which of the following is the correct net ionic equation for the reaction of $\mathrm{CaCl_2(aq)}$ with $\mathrm{Pb(NO_3)_2(aq)}$?

Accepted Answer

$\mathrm{Pb^{2+}(aq) + 2Cl^-(aq) \rightarrow PbCl_2(s)}$

Question 15

Which of the following is a correct classification for $\mathrm{NH_3}$ in water?

Accepted Answer

Weak base

Question 16

Which of the following is the correct net ionic equation for the reaction of $\mathrm{NaOH(aq)}$ with $\mathrm{HCl(aq)}$?

Accepted Answer

$\mathrm{H^+(aq) + OH^-(aq) \rightarrow H_2O(l)}$

Introduction to Reactions in Aqueous Solutions (Chapter 5) – Chem 101 Study Notes

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