Question 1

Which of the following best describes a double-replacement reaction?

Accepted Answer

A reaction where two ionic compounds in aqueous solution switch anions, often producing an insoluble substance.

Question 2

Which of the following pairs will NOT result in a double-replacement reaction when mixed in aqueous solution?

Accepted Answer

$$\mathrm{NaCl} (aq) $$and $$\mathrm{$$LiNO_3$$} (aq)$$

Question 3

According to the solubility rules, which of the following compounds is insoluble in water?

Accepted Answer

$$\mathrm{$$BaCrO_4$$}$$

Question 4

Which of the following best explains why a precipitate forms in some double-replacement reactions?

Accepted Answer

One of the products is insoluble in water, according to the solubility rules.

Question 5

Which of the following is the correct balanced equation for the reaction between aqueous barium chloride and aqueous potassium chromate?

Accepted Answer

$$\mathrm{$$BaCl_2$$ (aq) + K_2CrO_4 (aq) \rightarrow $$BaCrO_4$$ (s) + 2KCl (aq)}$$

Question 6

A student mixes aqueous solutions of sodium sulfate and barium nitrate. What is the net ionic equation for the reaction that occurs?

Accepted Answer

$$\mathrm{Ba$$^{2+}$$ (aq) + SO_4$^{2-} (aq) \rightarrow $$BaSO_4$$ (s)}$$

Question 7

Which of the following compounds is always soluble in water according to the solubility rules?

Accepted Answer

$$\mathrm{$$NaNO_3$$}$$

Question 8

A neutralization reaction between hydrochloric acid and sodium hydroxide produces which of the following?

Accepted Answer

$$\mathrm{NaCl}$$ and $$\mathrm{H_2O}$$

Question 9

Which of the following best describes a neutralization reaction?

Accepted Answer

A reaction between an acid and a base to produce a salt and water.

Question 10

Which of the following combinations will produce a precipitate?

Accepted Answer

$$\mathrm{Na_2SO_4} (aq) $$and $$\mathrm{$$BaCl_2$$} (aq)$$

Question 11

Which of the following is a correct statement about the solubility of ionic compounds in water?

Accepted Answer

All compounds containing nitrate ions are soluble.

Question 12

A hospital uses a solution of potassium chromate to test for the presence of barium ions in a patient's sample. What observation would confirm the presence of barium ions?

Accepted Answer

A yellow precipitate forms.

Question 13

Which of the following reactions is an example of a neutralization reaction?

Accepted Answer

$$\mathrm{HCl (aq) + NaOH (aq) \rightarrow NaCl (aq) + H_2O (l)}$$

Question 14

Which of the following best explains why $$\mathrm{NaCl}$$ and $$\mathrm{$$LiNO_3$$} do $$not react to form a precipitate?

Accepted Answer

Both products are soluble in water.

Question 15

Which of the following is the correct molecular equation for the reaction between aqueous silver nitrate and aqueous sodium chloride?

Accepted Answer

$$\mathrm{$$AgNO_3$$ (aq) + NaCl (aq) \rightarrow AgCl (s) + $$NaNO_3$$ (aq)}$$

Question 16

A student mixes solutions of calcium chloride and sodium carbonate. Which compound will precipitate?

Accepted Answer

$$\mathrm{$$CaCO_3$$}$$

Question 17

Which of the following best describes the products of a neutralization reaction?

Accepted Answer

A salt and water

Question 18

Which of the following is a correct net ionic equation for a neutralization reaction?

Accepted Answer

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

Question 19

Which of the following statements about solubility rules is correct?

Accepted Answer

All compounds containing acetate ions are soluble.

Double Replacement and Neutralization Reactions: Solubility Rules in General Chemistry

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