Question 1

Which of the following statements about electrolytes in aqueous solution is CORRECT?

Accepted Answer

Nonelectrolyte solutions do not conduct electricity.

Question 2

In the reaction $$\mathrm{Zn(s) + 2Ag^+(aq) \rightarrow Zn$$^{2+}$$(aq) + 2Ag(s)}$$, which species is the oxidizing agent?

Accepted Answer

$$\mathrm{Ag^+(aq)}$$

Question 3

Which of the following 0.10 M solutions will have the highest electrical conductivity?

Accepted Answer

$$\mathrm{$$CaCl_2$$}$$

Question 4

A 4.0 L gas at 25 $$^\circC is $$heated to 55 $$^\circC. $$What is the new volume of the gas, assuming constant pressure?

Accepted Answer

$$4.41\ \mathrm{L}$$

Question 5

Which of the following statements is FALSE regarding the kinetic molecular theory of gases?

Accepted Answer

All gas particles of a given temperature have the same kinetic energy.

Question 6

Which of the following would NOT cause the volume of an ideal gas in a container to increase?

Accepted Answer

The pressure is increased.

Question 7

Which of the following conditions would cause a real gas to behave most ideally?

Accepted Answer

Low pressure and high temperature.

Question 8

A mixture of 4.0 mol He and 9.6 g O$$_2 is $$placed in a 10.0 L tank at 300 K. What is the total pressure in the tank? ($$R = 0.0821\ \mathrm{L\cdot atm\cdot $$mol^{-1}$$\cdot K$$^{-1}$$})$$

Accepted Answer

$$12.3\ \mathrm{atm}$$

Question 9

Which of the following is the correct net ionic equation for the reaction between aqueous sodium hydroxide and aqueous iron(III) chloride?

Accepted Answer

$$\mathrm{Fe$$^{3+}$$(aq) + 3OH^-(aq) \rightarrow Fe(OH)_3(s)}$$

Question 10

A 1.00 L solution contains 0.10 mol KBr and 0.10 mol KCl. Which statement is true regarding the concentration of bromide ions?

Accepted Answer

The concentration of bromide ions is 0.10 M.

Question 11

Which of the following gases will effuse most rapidly under identical conditions?

Accepted Answer

$$\mathrm{NH_3$}$$

Question 12

Which of the following is the correct formula for the salt formed when aqueous solutions of calcium chloride and sodium phosphate are mixed?

Accepted Answer

$$\mathrm{Ca_3$(PO_4$)_2}$$

Question 13

Which of the following solutions will have the lowest freezing point?

Accepted Answer

0.10 M CaCl$$_2$$

Question 14

A sample of an unknown gas effuses through a pinhole in 53.0 min. Under identical conditions, O$$_2$$ effuses in 45.0 min. What is the molar mass of the unknown gas? (Use Graham's law: $$\frac{	ext{rate}_1}{	ext{rate}_2} = \sqrt{\frac{M_2$}{M_1$}})$$

Accepted Answer

44 g/mol

Question 15

Which of the following is the correct net ionic equation for the reaction between hydrochloric acid and sodium hydroxide?

Accepted Answer

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

Question 16

A 0.50 L sample of 0.20 M NaCl solution is diluted to a final volume of 2.00 L. What is the final concentration of NaCl?

Accepted Answer

0.05 M

Question 17

Which of the following is a redox reaction?

Accepted Answer

$$\mathrm{2H_2O(l) \rightarrow 2H_2(g) + O_2$(g)}$$

Question 18

Which of the following statements about the behavior of gases is TRUE?

Accepted Answer

At low pressures and high temperatures, real gases behave more ideally.

Question 19

Which of the following is the correct balanced equation for the complete neutralization of phosphoric acid with sodium hydroxide?

Accepted Answer

$$\mathrm{H_3PO_4(aq) + 3NaOH(aq) \rightarrow Na_3PO_4(aq) + 3H_2O(l)}$$

Question 20

Which of the following would increase the pressure of a gas in a sealed, rigid container?

Accepted Answer

Adding more gas.

General Chemistry: Solutions, Gases, Redox, and Stoichiometry – Study Guide

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