Question 1

Which of the following bonds is considered pure covalent?

Accepted Answer

The bond in $$\mathrm{Cl_2$}$$

Question 2

Which molecule has a polar covalent bond but is overall nonpolar?

Accepted Answer

$$\mathrm{CO_2$}$$

Question 3

How many lone pairs are present on the central atom in the Lewis structure of $$\mathrm{NH_3$}$$?

Accepted Answer

1

Question 4

Which of the following molecules violates the octet rule?

Accepted Answer

$$\mathrm{BF_3$}$$

Question 5

What is the formal charge on the oxygen atom in the nitrate ion ($$\mathrm{NO_3$^-}) $$that is double-bonded to nitrogen?

Accepted Answer

0

Question 6

Which of the following best describes the bond order of $$\mathrm{O_2$}$$?

Accepted Answer

2

Question 7

Which of the following is a correct balanced chemical equation for the combustion of propane ($$\mathrm{C_3H_8}$$)?

Accepted Answer

$$\mathrm{C_3H_8 + 5O_2 \rightarrow 3CO_2 + 4H_2O}$$

Question 8

A solution is prepared by dissolving 0.5 mol of $$\mathrm{NaCl} in $$enough water to make 1.0 L of solution. What is the molarity of the solution?

Accepted Answer

$$0.50\ \mathrm{M}$$

Question 9

Which of the following is a strong electrolyte?

Accepted Answer

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

Question 10

Which of the following compounds is most likely to be soluble in water?

Accepted Answer

$$\mathrm{$$KNO_3$$}$$

Question 11

What is the oxidation state of sulfur in $$\mathrm{SO_2$}$$?

Accepted Answer

+4

Question 12

Which of the following is the oxidizing agent in the reaction $$\mathrm{Zn + Cu$$^{2+}$$ \rightarrow Zn$$^{2+}$$ + Cu}$$?

Accepted Answer

$$\mathrm{Cu$$^{2+}$$}$$

Question 13

A student mixes solutions of $$\mathrm{$$AgNO_3$$}$$ and $$\mathrm{NaCl}. $$What is the net ionic equation for the reaction?

Accepted Answer

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

Question 14

Which of the following acids is a strong acid?

Accepted Answer

$$\mathrm{$$HNO_3$$}$$

Question 15

What is the pH of a $$1.0 	imes 10$$^{-3}$$\ \mathrm{M}$$ solution of $$\mathrm{HCl}$$?

Accepted Answer

3.0

Question 16

Which of the following statements is true regarding the solubility of ionic compounds?

Accepted Answer

All nitrates ($$\mathrm{NO_3$^-}) $$are soluble in water.

Question 17

A solution is made by mixing 100 mL of 0.2 M $$\mathrm{NaOH}$$ with 100 mL of 0.1 M $$\mathrm{HCl}. $$What is the final concentration of $$\mathrm{OH^-}$$ ions after neutralization?

Accepted Answer

$$0.05\ \mathrm{M}$$

Question 18

Which of the following is a correct net ionic equation for the reaction between $$\mathrm{HCl}$$ and $$\mathrm{NaOH}$$?

Accepted Answer

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

Question 19

Which of the following is NOT a redox reaction?

Accepted Answer

$$\mathrm{$$AgNO_3$$ (aq) + NaCl (aq) \rightarrow AgCl (s) + $$NaNO_3$$ (aq)}$$

General Chemistry Exam 2 Study Guide: Lewis Structures, Bonding, and Chemical Reactions

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