Question 1

Which of the following best describes a strong electrolyte in aqueous solution?

Accepted Answer

It completely ionizes and is a good conductor of electricity.

Question 2

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

Accepted Answer

$$\mathrm{CH_3OH}$$

Question 3

A solution contains $$0.0050\ \mathrm{M}\ \mathrm{$$MgCl_2$$}. $$What is the concentration of chloride ions, $$[\mathrm{Cl}^-]$$, in the solution?

Accepted Answer

$$0.0100\ \mathrm{M}$$

Question 4

Which of the following best explains why seawater conducts electricity?

Accepted Answer

Seawater contains many dissolved ions that migrate and carry charge.

Question 5

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

Accepted Answer

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

Question 6

Which of the following ions would NOT form a precipitate when mixed with $$\mathrm{Na_2SO_4}(aq)$$?

Accepted Answer

$$\mathrm{K}^+$$

Question 7

Which of the following statements about weak electrolytes is correct?

Accepted Answer

They partially ionize in water and are fair conductors of electricity.

Question 8

A student mixes $$\mathrm{$$AgNO_3$$}(aq)$$ with $$\mathrm{KBr}(aq). $$Which compound precipitates, and what is the net ionic equation?

Accepted Answer

$$\mathrm{AgBr}$$; $$\mathrm{Ag}^+(aq) + \mathrm{Br}^-(aq) \rightarrow \mathrm{AgBr}(s)$$

Question 9

Which of the following best describes the role of water in aqueous solutions?

Accepted Answer

Water can dissolve many substances and facilitate ionization or dissociation.

Question 10

Which of the following is a correct statement about the solubility guidelines for ionic compounds?

Accepted Answer

All salts of group 1 cations and ammonium are soluble.

Question 11

A solution of $$\mathrm{CH_3COOH} in $$water is tested for conductivity. What is the expected result and why?

Accepted Answer

Moderate conductivity because it is a weak electrolyte.

Question 12

Which of the following best explains why $$\mathrm{$$MgCl_2$$} is a $$strong electrolyte?

Accepted Answer

It completely dissociates into $$\mathrm{Mg$$^{2+}$$}$$ and $$\mathrm{Cl^-}$$ ions in water.

Question 13

Which of the following is the correct ionic equation for the dissolution of $$\mathrm{$$MgCl_2$$} in $$water?

Accepted Answer

$$\mathrm{$$MgCl_2$$}(aq) \rightarrow \mathrm{Mg}^{2+}(aq) + 2\ \mathrm{Cl}^-(aq)$$

Question 14

Which of the following pairs will NOT form a precipitate when mixed in aqueous solution?

Accepted Answer

$$\mathrm{$$NaNO_3$$}$$ and $$\mathrm{KCl}$$

Question 15

A student adds $$\mathrm{$$AgNO_3$$} to a $$solution and observes a white precipitate. Which ion was most likely present in the original solution?

Accepted Answer

$$\mathrm{Cl}^-$$

Question 16

Which of the following best describes the migration of ions during the conduction of electricity in an aqueous solution?

Accepted Answer

Cations move toward the cathode and anions move toward the anode.

5.1

Study Guide - Practice Questions