Question 1

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

Accepted Answer

Sodium chloride ($\mathrm{NaCl}$)

Question 2

A solution is prepared by dissolving $5.85$ g of $\mathrm{NaCl}$ in enough water to make $500$ mL of solution. What is the molarity of the solution? ($\mathrm{NaCl}$ molar mass = $58.5$ g/mol)

Accepted Answer

$0.10$ M

Question 3

Which of the following best describes a metathesis (double displacement) reaction?

Accepted Answer

A reaction in which two compounds exchange ions to form two new compounds

Question 4

What is the net ionic equation for the reaction between aqueous solutions of $\mathrm{Na_2SO_4}$ and $\mathrm{BaCl_2}$?

Accepted Answer

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

Question 5

A student mixes $50.0$ mL of $0.200$ M $\mathrm{HCl}$ with $50.0$ mL of $0.200$ M $\mathrm{NaOH}$. What is the concentration of $\mathrm{NaCl}$ formed after the reaction is complete?

Accepted Answer

$0.0500$ M

Question 6

Which of the following is the correct balanced equation for the combustion of methane ($\mathrm{CH_4}$)?

Accepted Answer

$\mathrm{CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O}$

Question 7

In the reaction $\mathrm{Zn (s) + CuSO_4 (aq) \rightarrow ZnSO_4 (aq) + Cu (s)}$, which species is oxidized?

Accepted Answer

$\mathrm{Zn}$

Question 8

A $25.0$ mL sample of $0.100$ M $\mathrm{H_2SO_4}$ is titrated with $0.200$ M $\mathrm{NaOH}$. What volume of $\mathrm{NaOH}$ is required to reach the equivalence point?

Accepted Answer

$25.0$ mL

Question 9

Which of the following statements about limiting reactants is correct?

Accepted Answer

The limiting reactant is completely consumed in the reaction

Question 10

A reaction has a theoretical yield of $10.0$ g, but only $7.5$ g of product is actually obtained. What is the percent yield?

Accepted Answer

$75\%$

Question 11

Which of the following is a weak electrolyte?

Accepted Answer

Ammonia ($\mathrm{NH_3}$)

Question 12

What is the concentration of $\mathrm{Cl^-}$ ions in a $0.20$ M solution of $\mathrm{CaCl_2}$?

Accepted Answer

$0.40$ M

Question 13

Which of the following is the correct net ionic equation for the neutralization of $\mathrm{HNO_3}$ with $\mathrm{KOH}$?

Accepted Answer

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

Question 14

If $100$ mL of $0.50$ M $\mathrm{HCl}$ is diluted to $250$ mL, what is the new concentration?

Accepted Answer

$0.20$ M

Question 15

Which of the following reactions is a redox reaction?

Accepted Answer

$\mathrm{2H_2 (g) + O_2 (g) \rightarrow 2H_2O (l)}$

Question 16

A solution contains $0.10$ M $\mathrm{Na_2SO_4}$. What is the concentration of $\mathrm{Na^+}$ ions?

Accepted Answer

$0.20$ M

Question 17

Which of the following best describes a non-electrolyte?

Accepted Answer

A substance that does not conduct electricity when dissolved in water

Question 18

Which of the following pairs of solutions will produce a precipitate when mixed?

Accepted Answer

$\mathrm{AgNO_3 (aq)}$ and $\mathrm{NaCl (aq)}$

Question 19

A $100$ mL sample of $0.300$ M $\mathrm{KBr}$ is diluted to $400$ mL. What is the final concentration?

Accepted Answer

$0.075$ M

Question 20

Which of the following is the correct net ionic equation for the reaction of $\mathrm{Pb(NO_3)_2}$ with $\mathrm{KI}$ in aqueous solution?

Accepted Answer

$\mathrm{Pb^{2+} (aq) + 2I^- (aq) \rightarrow PbI_2 (s)}$

Study Guide: Chemical Reactions, Stoichiometry, and Aqueous Solutions

Study Guide - Practice Questions

Study Guide - Flashcards