Question 1

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

Accepted Answer

HNO3

Question 2

Which of the following compounds is a weak electrolyte?

Accepted Answer

NH3

Question 3

Which of the following compounds is a nonelectrolyte?

Accepted Answer

CH3OH

Question 4

Which of the following compounds is insoluble in water?

Accepted Answer

AgBr

Question 5

What is the net ionic equation for the reaction between aqueous solutions of Pb(NO3)2 and Na2SO4?

Accepted Answer

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

Question 6

Which of the following is the correct molecular equation for the reaction between sodium sulfide and copper(II) sulfate?

Accepted Answer

$$\mathrm{Na_2S (aq) + $$CuSO_4$$ (aq) \rightarrow CuS (s) + Na_2SO_4 (aq)}$$

Question 7

Assign the oxidation number to sulfur in $$\mathrm{SO_4$^{2-}}.$$

Accepted Answer

+6

Question 8

In the reaction $$\mathrm{$$MnO_2$$ + 4HBr \rightarrow $$MnBr_2$$ + Br_2$ + 2H_2O}$$, which species is oxidized?

Accepted Answer

Br in $$\mathrm{HBr}$$

Question 9

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of hydrochloric acid and ammonia?

Accepted Answer

$$\mathrm{H^+ (aq) + NH_3$ (aq) \rightarrow NH_4$^+ (aq)}$$

Question 10

Which of the following is the correct complete ionic equation for the reaction between aqueous solutions of potassium carbonate and barium chloride?

Accepted Answer

$$\mathrm{2K^+ (aq) + CO_3$^{2-} (aq) + Ba$$^{2+}$$ (aq) + 2Cl^- (aq) \rightarrow $$BaCO_3$$ (s) + 2K^+ (aq) + 2Cl^- (aq)}$$

Question 11

In a reaction where $$\mathrm{SO_3$^{2-}} is $$converted into $$\mathrm{SO_4$^{2-}}$$, the sulfur atom:

Accepted Answer

is oxidized

Question 12

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of potassium iodide and silver nitrate?

Accepted Answer

$$\mathrm{Ag^+ (aq) + I^- (aq) \rightarrow AgI (s)}$$

Question 13

Which of the following is the correct molecular equation for the reaction between aqueous solutions of calcium chloride and sodium phosphate?

Accepted Answer

$$\mathrm{3CaCl_2 (aq) + 2Na_3PO_4 (aq) \rightarrow Ca_3$(PO_4$)_2 (s) + 6NaCl (aq)}$$

Question 14

Which of the following is the correct oxidation number for oxygen in $$\mathrm{CO_2$}$$?

Accepted Answer

-2

Question 15

In the reaction $$\mathrm{2NO_2 + 2I^- + 2H^+ \rightarrow I_2$ + 2NO + 2H_2O}$$, which species is the reducing agent?

Accepted Answer

$$\mathrm{I^-}$$

Question 16

Which of the following is the correct net ionic equation for the reaction between aqueous solutions of barium nitrate and sodium sulfate?

Accepted Answer

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

Question 17

Which of the following is the correct oxidation number for potassium in $$\mathrm{K_2SO_4}$$?

Accepted Answer

+1

Question 18

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

Accepted Answer

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

General Chemistry: Chemical Quantities & Aqueous Reactions Study Notes

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