Question 1

Which of the following statements best describes the difference between ionic and covalent bonds?

Accepted Answer

Ionic bonds involve the transfer of electrons from a metal to a nonmetal, while covalent bonds involve the sharing of electrons between two nonmetals.

Question 2

Which of the following is the correct empirical formula for a compound containing 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?

Accepted Answer

$\mathrm{CH}_2\mathrm{O}$

Question 3

A sample of glucose ($\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$) contains $0.500$ moles. What is the mass of this sample? (Molar mass of glucose = $180.16\ \mathrm{g/mol}$)

Accepted Answer

$90.08\ \mathrm{g}$

Question 4

Which of the following is the correct name for $\mathrm{Fe}_2\mathrm{O}_3$?

Accepted Answer

Iron(III) oxide

Question 5

How many molecules are present in $18.0\ \mathrm{g}$ of water ($\mathrm{H}_2\mathrm{O}$)? (Molar mass of $\mathrm{H}_2\mathrm{O} = 18.0\ \mathrm{g/mol}$, Avogadro's number $= 6.022 	imes 10^{23}$)

Accepted Answer

$6.02 	imes 10^{23}$

Question 6

Which of the following compounds is classified as a molecular compound?

Accepted Answer

$\mathrm{CO}_2$

Question 7

What is the mass percent of oxygen in $\mathrm{H}_2\mathrm{SO}_4$? (Molar mass: H = $1.01\ \mathrm{g/mol}$, S = $32.07\ \mathrm{g/mol}$, O = $16.00\ \mathrm{g/mol}$)

Accepted Answer

$65.2\%$

Question 8

Which of the following is the correct formula for aluminum sulfate?

Accepted Answer

$\mathrm{Al}_2(\mathrm{SO}_4)_3$

Question 9

A chemical reaction is represented by the equation: $2\mathrm{H}_2 + \mathrm{O}_2 \rightarrow 2\mathrm{H}_2\mathrm{O}$. If $4.0\ \mathrm{mol}$ of $\mathrm{H}_2$ react with $2.0\ \mathrm{mol}$ of $\mathrm{O}_2$, what is the limiting reactant?

Accepted Answer

Neither, both are in excess

Question 10

What is the molarity of a solution prepared by dissolving $10.0\ \mathrm{g}$ of $\mathrm{NaCl}$ (molar mass $= 58.44\ \mathrm{g/mol}$) in enough water to make $500.0\ \mathrm{mL}$ of solution?

Accepted Answer

$0.342\ \mathrm{M}$

Question 11

Which of the following is the correct name for $\mathrm{N}_2\mathrm{O}_5$?

Accepted Answer

Dinitrogen pentoxide

Question 12

A $250.0\ \mathrm{mL}$ sample of $0.800\ \mathrm{M}$ $\mathrm{HCl}$ is diluted to $1.00\ \mathrm{L}$. What is the final concentration?

Accepted Answer

$0.200\ \mathrm{M}$

Question 13

Which of the following best describes a limiting reactant in a chemical reaction?

Accepted Answer

The reactant that determines the amount of product formed

Question 14

A compound has an empirical formula of $\mathrm{CH}_2\mathrm{O}$ and a molar mass of $180\ \mathrm{g/mol}$. What is its molecular formula?

Accepted Answer

$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6$

Question 15

What is the percent yield if $10.0\ \mathrm{g}$ of product is obtained from a reaction with a theoretical yield of $12.0\ \mathrm{g}$?

Accepted Answer

$83.3\%$

Question 16

Which of the following is the correct formula for copper(II) nitrate?

Accepted Answer

$\mathrm{Cu(NO}_3)_2$

Question 17

A solution is prepared by dissolving $5.00\ \mathrm{g}$ of $\mathrm{KBr}$ (molar mass $= 119.0\ \mathrm{g/mol}$) in enough water to make $250.0\ \mathrm{mL}$ of solution. What is the molarity of the solution?

Accepted Answer

$0.168\ \mathrm{M}$

Question 18

Which of the following is the correct name for $\mathrm{H}_2\mathrm{SO}_4$?

Accepted Answer

Sulfuric acid

Question 19

If $2.00\ \mathrm{mol}$ of $\mathrm{Al}$ reacts with $3.00\ \mathrm{mol}$ of $\mathrm{Cl}_2$ according to the equation $2\mathrm{Al} + 3\mathrm{Cl}_2 \rightarrow 2\mathrm{AlCl}_3$, what is the maximum number of moles of $\mathrm{AlCl}_3$ that can be formed?

Accepted Answer

$2.00\ \mathrm{mol}$

Question 20

Which of the following best describes a hydrate?

Accepted Answer

A compound that contains a specific number of water molecules chemically bound within its crystal structure

Exam 2 Study Guide: Chemical Bonding, Compounds, Chemical Reactions, and Solutions

Study Guide - Practice Questions

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