Question 1

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

Accepted Answer

It completely dissociates into ions, resulting in a strongly conducting solution.

Question 2

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

Accepted Answer

C_6H_{12}$$O_6$$

Question 3

A student mixes solutions of Na_2SO_4 and $$BaCl_2. $$Which of the following will occur?

Accepted Answer

A precipitate of $$BaSO_4$$ will form because it is insoluble in water.

Question 4

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of $$AgNO_3$$ and NaCl?

Accepted Answer

$$\mathrm{Ag}^+(aq) + \mathrm{Cl}^-(aq) \rightarrow \mathrm{AgCl}(s)$$

Question 5

Which of the following acids is classified as a strong acid?

Accepted Answer

$$HNO_3$$

Question 6

A solution is prepared by dissolving 0.50 mol of NaCl in enough water to make 1.0 L of solution. What is the molarity of the solution?

Accepted Answer

$$0.50\ \mathrm{M}$$

Question 7

Which of the following best describes the process of dilution?

Accepted Answer

Adding solvent to a solution, which decreases its concentration but does not change the number of moles of solute.

Question 8

What is the oxidation number of sulfur in the sulfate ion, $$\mathrm{SO}_4$$^{2-}$$?

Accepted Answer

$$+6$$

Question 9

Which of the following reactions is a redox (oxidation-reduction) reaction?

Accepted Answer

$$\mathrm{Zn}(s) + \mathrm{CuSO}_4(aq) \rightarrow \mathrm{ZnSO}_4(aq) + \mathrm{Cu}(s)$$

Question 10

A 25.0 mL sample of 0.100 M HCl is titrated with 0.200 M NaOH. What volume of NaOH is required to reach the equivalence point?

Accepted Answer

$$12.5\ \mathrm{mL}$$

Question 11

Which of the following best explains why NaCl is a strong electrolyte?

Accepted Answer

NaCl is an ionic compound that completely dissociates into Na^+ and Cl^- ions in water.

Question 12

Which of the following is the correct balanced molecular equation for the reaction between calcium carbonate and hydrochloric acid?

Accepted Answer

$$\mathrm{CaCO}_3(s) + 2\mathrm{HCl}(aq) \rightarrow \mathrm{CaCl}_2(aq) + \mathrm{CO}_2(g) + \mathrm{H}_2O(l)$$

Question 13

Which of the following is a correct statement about the activity series of metals?

Accepted Answer

A metal higher in the activity series will displace a metal ion lower in the series from solution.

Question 14

A solution is made by diluting 50.0 mL of 6.00 M HCl to a final volume of 300.0 mL. What is the final concentration?

Accepted Answer

$$1.00\ \mathrm{M}$$

Question 15

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

Accepted Answer

$$\mathrm{H}^+(aq) + \mathrm{OH}^-(aq) \rightarrow \mathrm{H}_2O(l)$$

Question 16

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction in which an insoluble solid forms when two solutions are mixed.

Question 17

What is the sum of the oxidation numbers in the dichromate ion, $$\mathrm{Cr}_2\mathrm{O}_7$$^{2-}$$?

Accepted Answer

$$-2$$

Question 18

Which of the following is a correct procedure for writing a net ionic equation?

Accepted Answer

Write the molecular equation, dissociate all strong electrolytes, and cancel spectator ions.

Question 19

A sample of antacid contains Mg(OH)_2. If 0.10 mol of Mg(OH)_2 neutralizes 0.20 mol of HCl, what is the balanced equation for the reaction?

Accepted Answer

$$\mathrm{Mg(OH)}_2(s) + 2\mathrm{HCl}(aq) \rightarrow \mathrm{MgCl}_2(aq) + 2\mathrm{H}_2O(l)$$

Reactions in Aqueous Solution: General Chemistry Chapter 4 Study Notes

스터디 가이드 - 연습 문제