Question 1

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

Accepted Answer

Barium sulfate ($$\mathrm{$$BaSO_4$$})$$

Question 2

Which of the following ions is considered a spectator ion in the reaction: $$\mathrm{$$AgNO_3$$(aq) + NaCl(aq) \rightarrow AgCl(s) + $$NaNO_3$$(aq)}$$?

Accepted Answer

$$\mathrm{Na^+}$$

Question 3

Which of the following is evidence that a chemical reaction has occurred?

Accepted Answer

All of these are evidence of a chemical reaction.

Question 4

What is the net ionic equation for the reaction between aqueous solutions of $$\mathrm{Pb(NO_3$)_2}$$ and $$\mathrm{K_2SO_4}$$?

Accepted Answer

$$\mathrm{Pb$$^{2+}$$(aq) + SO_4$^{2-}(aq) \rightarrow $$PbSO_4$$(s)}$$

Question 5

Which of the following compounds will NOT undergo a gas evolution reaction when acid is added?

Accepted Answer

Sodium nitrate ($$\mathrm{$$NaNO_3$$})$$

Question 6

Which of the following is a correct balanced equation for the reaction of sulfuric acid with sodium hydroxide?

Accepted Answer

$$\mathrm{H_2SO_4 + 2NaOH \rightarrow Na_2SO_4 + 2H_2O}$$

Question 7

Which of the following statements about redox reactions is FALSE?

Accepted Answer

A reaction involving only acid and base is a redox reaction.

Question 8

Which of the following compounds is SOLUBLE in water?

Accepted Answer

Ammonium nitrate ($$\mathrm{NH_4NO_3})$$

Question 9

When the equation $$\mathrm{C_3H_8 + O_2$ \rightarrow CO_2$ + H_2O} is $$balanced, what is the coefficient of $$\mathrm{O_2$}$$?

Accepted Answer

5

Question 10

Which of the following is the correct formula for the phosphate ion?

Accepted Answer

$$\mathrm{PO_4$^{3-}}$$

Question 11

Which of the following best describes a precipitation reaction?

Accepted Answer

A reaction in which a solid forms when two solutions are mixed.

Question 12

Which of the following ions would NOT be present in a solution of sodium sulfate ($$\mathrm{Na_2SO_4}$$)?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 13

Which of the following is the correct net ionic equation for the reaction between $$\mathrm{$$MgCl_2$$(aq)}$$ and $$\mathrm{$$AgNO_3$$(aq)}$$?

Accepted Answer

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

Question 14

Which of the following is a polyatomic ion?

Accepted Answer

$$\mathrm{NO_3$^-}$$

Question 15

Which of the following best describes an aqueous solution?

Accepted Answer

A solution in which water is the solvent.

Question 16

Which of the following compounds is insoluble in water?

Accepted Answer

Calcium carbonate ($$\mathrm{$$CaCO_3$$})$$

Question 17

Which of the following is the correct net ionic equation for the reaction between $$\mathrm{$$BaCl_2$$(aq)}$$ and $$\mathrm{Na_2SO_4(aq)}$$?

Accepted Answer

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

Question 18

Which of the following is the correct formula for the ammonium ion?

Accepted Answer

$$\mathrm{NH_4$^+}$$

Question 19

Which of the following best describes a redox reaction?

Accepted Answer

A reaction in which electrons are transferred between species.

Question 20

Which of the following is the correct net ionic equation for the reaction between $$\mathrm{Na_2CO_3(aq)}$$ and $$\mathrm{HCl(aq)}$$?

Accepted Answer

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

Study Guide: Chemical Reactions, Solubility, and Ionic Compounds

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