$$\mathrm{M = \frac{\text{moles\ of\ solute}}{\text{volume\ of\ solution\ in\ liters}}}$$

Question 1

Which of the following best describes an aqueous solution?

Accepted Answer

A mixture in which water is the solvent.

Question 2

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

Accepted Answer

Na2SO4

Question 3

Which of the following is a correct net ionic equation for the reaction between AgNO3(aq) and KCl(aq)?

Accepted Answer

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

Question 4

Which of the following is NOT a strong acid?

Accepted Answer

CH3COOH

Question 5

A solution is prepared by dissolving 0.56 mol of BaCl2 in 100.0 mL of water. What is the molarity of the solution?

Accepted Answer

$$5.6\ \mathrm{M}$$

Question 6

Which of the following compounds will form a precipitate when mixed with a solution of Pb(NO3)2?

Accepted Answer

KCl

Question 7

Which of the following is the correct balanced molecular equation for the reaction of sodium carbonate with sulfuric acid?

Accepted Answer

$$\mathrm{Na_2CO_3(aq) + H_2SO_4(aq) \rightarrow Na_2SO_4(aq) + CO_2$(g) + H_2O(l)}$$

Question 8

Which of the following is a nonelectrolyte?

Accepted Answer

CH3OH

Question 9

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

Accepted Answer

$$+6$$

Question 10

Which of the following reactions is a redox reaction?

Accepted Answer

$$\mathrm{Fe(s) + O_2$(g) \rightarrow Fe_2O_3(s)}$$

Question 11

How many grams of Na2SO4 are required to make 0.350 L of 0.500 M Na2SO4 solution? (Molar mass of Na2SO4 = 142 g/mol)

Accepted Answer

$$24.9\ \mathrm{g}$$

Question 12

Which of the following best describes a spectator ion?

Accepted Answer

An ion that does not participate in the chemical reaction.

Question 13

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

Accepted Answer

$$\mathrm{M = \frac{	ext{moles\ of\ solute}}{	ext{volume\ of\ solution\ in\ liters}}}$$

Question 14

Which of the following statements about solubility rules is correct?

Accepted Answer

All nitrates are soluble.

Question 15

A student wants to prepare 250 mL of 0.100 M CuSO4 solution from a 1.00 M stock solution. What volume of the stock solution should be used?

Accepted Answer

$$25.0\ \mathrm{mL}$$

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

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 18

Which of the following metals will NOT be oxidized by acids under normal conditions?

Accepted Answer

Au

Question 19

How many milliliters of 3.0 M H2SO4 are needed to make 450 mL of 0.10 M H2SO4?

Accepted Answer

$$15\ \mathrm{mL}$$

Chapter 4: Reactions in Aqueous Solution – Study Notes

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