Question 1

Which of the following is the correct balanced equation for the reaction between lead(II) nitrate and potassium iodide in aqueous solution?

Accepted Answer

$$\mathrm{Pb(NO_3$)_2 (aq) + 2KI (aq) \rightarrow $$PbI_2$$ (s) + 2KNO_3 (aq)}$$

Question 2

What is the net ionic equation for the reaction between silver nitrate and sodium chloride in aqueous solution?

Accepted Answer

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

Question 3

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction in which two aqueous solutions combine to form an insoluble solid.

Question 4

When sodium carbonate reacts with hydrochloric acid, which gas is produced?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 5

Which of the following is the correct ionic equation for the reaction between barium chloride and sodium sulfate?

Accepted Answer

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

Question 6

A solution of sodium carbonate is added to a solution of calcium chloride. What is the precipitate formed?

Accepted Answer

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

Question 7

Which of the following is the correct formula for the compound formed when magnesium reacts with oxygen?

Accepted Answer

$$\mathrm{MgO}$$

Question 8

What is the balanced equation for the reaction of hydrochloric acid with sodium hydroxide?

Accepted Answer

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

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 is the correct net ionic equation for the reaction between hydrochloric acid and sodium carbonate?

Accepted Answer

$$\mathrm{2H^+ (aq) + CO_3$^{2-} (aq) \rightarrow CO_2$ (g) + H_2O (l)}$$

Question 11

Which of the following is the correct formula for the product formed when iron(III) chloride reacts with sodium hydroxide?

Accepted Answer

$$\mathrm{Fe(OH)_3}$$

Question 12

A student mixes solutions of silver nitrate and sodium sulfate. What observation would indicate a chemical reaction has occurred?

Accepted Answer

A white precipitate forms.

Question 13

Which of the following is a correct example of a double displacement reaction?

Accepted Answer

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

Question 14

Which of the following is the correct net ionic equation for the reaction between hydrochloric acid and barium hydroxide?

Accepted Answer

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

Question 15

Which of the following best describes the role of a spectator ion in a chemical reaction?

Accepted Answer

An ion that does not participate in the actual chemical change.

Step-by-Step Guidance for General Chemistry: Chemical Formulae and Reactions

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