Question 1

Which of the following best describes a precipitation reaction as used in molecular gastronomy?

Accepted Answer

A reaction where a solid forms when two solutions are mixed.

Question 2

What is the molarity (M) of a solution prepared by dissolving 0.50 mol of NaCl in enough water to make 2.0 L of solution?

Accepted Answer

$$0.25\ \mathrm{M}$$

Question 3

A student wants to prepare 250 mL of a 0.10 M KBr solution from a 1.0 M stock solution. What volume of the stock solution should be used?

Accepted Answer

$$25\ \mathrm{mL}$$

Question 4

Which of the following statements about electrolytes is correct?

Accepted Answer

Strong electrolytes dissolve completely as ions in water.

Question 5

Which of the following compounds is most likely to be soluble in water with no exceptions, based on empirical solubility rules?

Accepted Answer

$$\mathrm{NaCl}$$

Question 6

When 25 g of salt is dissolved in 251 g of water, what is the total mass of the resulting solution?

Accepted Answer

$$276\ \mathrm{g}$$

Question 7

Which of the following is a net ionic equation for the reaction between aqueous solutions of NaCl and AgNO$$_3$$?

Accepted Answer

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

Question 8

A 10.0 mL sample of 0.20 M HBr is titrated with 0.10 M NaOH. What volume of NaOH is required to reach the equivalence point?

Accepted Answer

$$20.0\ \mathrm{mL}$$

Question 9

Which of the following best describes the difference between the charge of a polyatomic ion and the oxidation states of its constituent atoms?

Accepted Answer

The charge of a polyatomic ion is a property of the entire ion, while the oxidation states are assigned to each individual atom.

Question 10

Which of the following metals is most easily oxidized according to the activity series?

Accepted Answer

$$\mathrm{Na}$$

Question 11

Which of the following statements is true regarding redox reactions?

Accepted Answer

In a redox reaction, any increase in the oxidation state of a reactant must be accompanied by a decrease in the oxidation state of another reactant.

Question 12

Which of the following aqueous solutions will conduct electricity?

Accepted Answer

$$1.0\ \mathrm{M}\ \mathrm{KBr}$$

Question 13

Which of the following is the correct molecular equation for the reaction between aqueous solutions of BaCl$$_2$$ and Na$$_2SO$_4$$?

Accepted Answer

$$\mathrm{$$BaCl_2$$ (aq) + Na_2SO_4 (aq) \rightarrow 2NaCl (aq) + $$BaSO_4$$ (s)}$$

Question 14

Which of the following best describes what happens when NaCl dissolves in water?

Accepted Answer

Na$$^+$$ and Cl$$^-$$ ions are surrounded by water molecules and become free-moving, allowing the solution to conduct electricity.

Question 15

Which of the following is a strong acid?

Accepted Answer

$$\mathrm{HCl}$$

Question 16

What is the net ionic equation for the neutralization reaction between HCl and NaOH?

Accepted Answer

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

Introduction to Solutions and Aqueous Reactions: Study Notes

Study Guide - Practice Questions