Question 1

Which of the following best describes the oxidation number of sulfur in $$\mathrm{H_2SO_4}$$?

Accepted Answer

$$+6$$

Question 2

Which of the following statements correctly defines a base according to the Arrhenius theory?

Accepted Answer

A substance that increases the concentration of $$\mathrm{OH^-}$$ ions in aqueous solution.

Question 3

Which of the following is a physical property of acids?

Accepted Answer

They turn blue litmus paper red.

Question 4

A solution has a pH of 3. Which of the following statements is true?

Accepted Answer

The solution is acidic and has a high concentration of $$\mathrm{H^+}$$ ions.

Question 5

Which of the following reactions represents a neutralization reaction?

Accepted Answer

$$\mathrm{HCl} + \mathrm{NaOH} \rightarrow \mathrm{NaCl} + \mathrm{H_2O}$$

Question 6

Which of the following best differentiates between a strong electrolyte and a nonelectrolyte?

Accepted Answer

A strong electrolyte completely dissociates in water, while a nonelectrolyte does not conduct electricity.

Question 7

Which of the following is NOT a method of salt preparation?

Accepted Answer

Electrolysis of water.

Question 8

Which of the following is a chemical property of bases?

Accepted Answer

They react with acids to form salt and water.

Question 9

Which of the following salts is formed when sulfuric acid reacts with potassium hydroxide?

Accepted Answer

$$\mathrm{K_2SO_4}$$

Question 10

A student mixes $$50\ \mathrm{mL} of$$ $$0.1\ \mathrm{M}$$ $$\mathrm{HCl}$$ with $$50\ \mathrm{mL} of$$ $$0.1\ \mathrm{M}$$ $$\mathrm{NaOH}. $$What is the pH of the resulting solution?

Accepted Answer

$$7$$

Question 11

Which of the following best describes a salt?

Accepted Answer

A compound formed from the reaction of an acid and a base.

Question 12

Which of the following is a nonelectrolyte?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} ($$glucose)

Question 13

Which of the following best explains why acids conduct electricity in aqueous solution?

Accepted Answer

They produce $$\mathrm{H^+}$$ ions which are mobile charge carriers.

Question 14

Which of the following is the correct oxidation number for chlorine in $$\mathrm{$$NaClO_3$$}$$?

Accepted Answer

$$+5$$

Question 15

Which of the following is a correct definition of pH?

Accepted Answer

$$\mathrm{pH} = -\log_{10}[\mathrm{H^+}]$$

Question 16

Which of the following best describes the result of mixing an acid and a base in the correct stoichiometric ratio?

Accepted Answer

A salt and water are formed.

Question 17

Which of the following is a method for preparing sodium chloride in the laboratory?

Accepted Answer

Reacting hydrochloric acid with sodium hydroxide.

Question 18

Which of the following is a chemical property of acids?

Accepted Answer

They react with metals to produce hydrogen gas.

Question 19

Which of the following best describes a weak electrolyte?

Accepted Answer

A substance that partially dissociates in water and conducts electricity weakly.

Question 20

Which of the following is the correct oxidation number for nitrogen in $$\mathrm{NH_4$^+}$$?

Accepted Answer

$$-3$$

Acids, Bases, Salts, and Related Chemical Concepts: Study Guide

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