Question 1

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

Accepted Answer

It completely dissociates into ions and conducts electricity well.

Question 2

Which of the following compounds is most likely to be a nonelectrolyte when dissolved in water?

Accepted Answer

C_6H_{12}$$O_6$$

Question 3

A student mixes solutions of $$\mathrm{$$AgNO_3$$}$$ and $$\mathrm{NaCl}. $$What is the net ionic equation for the reaction that occurs?

Accepted Answer

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

Question 4

Which of the following is a correct statement about acids and bases?

Accepted Answer

Acids are proton donors and bases are proton acceptors.

Question 5

Which of the following is a weak electrolyte?

Accepted Answer

$$NH_3$$

Question 6

What is the oxidation number of sulfur in $$\mathrm{SO_4$^{2-}}$$?

Accepted Answer

+6

Question 7

Which of the following metals will react with hydrochloric acid to produce hydrogen gas, according to the activity series?

Accepted Answer

Zinc

Question 8

A solution is prepared by dissolving 0.5 mol of NaCl in enough water to make 1.0 L of solution. What is the molarity of the solution?

Accepted Answer

0.5 M

Question 9

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 10

What is the final concentration when 50.0 mL of 6.0 M HCl is diluted to a total volume of 300.0 mL?

Accepted Answer

1.0 M

Question 11

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

Accepted Answer

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

Question 12

A student titrates 25.0 mL of H_2SO_4 with 0.100 M NaOH. If it takes 50.0 mL of NaOH to reach the equivalence point, what is the concentration of the H_2SO_4?

Accepted Answer

0.100 M

Question 13

Which of the following is NOT a correct rule for assigning oxidation numbers?

Accepted Answer

Oxygen is always assigned an oxidation number of +2.

Question 14

Which of the following best describes a metathesis (exchange) reaction?

Accepted Answer

A reaction in which the cations and anions of two compounds exchange places.

Question 15

Which of the following is a correct statement about dilution?

Accepted Answer

The concentration decreases but the number of moles of solute remains the same.

Question 16

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

Accepted Answer

$$\mathrm{Na_2CO_3(aq) + 2HCl(aq) \rightarrow 2NaCl(aq) + CO_2$(g) + H_2O(l)}$$

Question 17

Which of the following is a real-life application of a neutralization reaction?

Accepted Answer

Using antacids to relieve heartburn.

Question 18

Which of the following statements about titration is correct?

Accepted Answer

The equivalence point is when stoichiometrically equivalent amounts of acid and base have reacted.

Question 19

Which of the following is the correct formula for calculating molarity?

Accepted Answer

$$\mathrm{M = \frac{mol\ solute}{L\ solution}}$$

Question 20

Which of the following is a spectator ion in the reaction between $$\mathrm{Na_2SO_4}$$ and $$\mathrm{$$BaCl_2$$} in $$aqueous solution?

Accepted Answer

$$\mathrm{Na^+}$$

Reactions in Aqueous Solution: Study Notes for General Chemistry

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