Question 1

Which of the following best describes a Brønsted-Lowry acid?

Accepted Answer

A substance that donates a proton (H+)

Question 2

Which of the following reactions represents the neutralization of hydrochloric acid with sodium hydroxide?

Accepted Answer

$$\mathrm{NaOH(aq) + HCl(aq) \rightarrow NaCl(aq) + H_2O(l)}$$

Question 3

A solution has a hydrogen ion concentration of $$8 	imes 10$$^{-4}$$ M. What is its pH?

Accepted Answer

$$3.10$$

Question 4

Which of the following is a correct statement about strong acids?

Accepted Answer

They ionize completely in water solution.

Question 5

Which of the following is an example of a buffer solution?

Accepted Answer

A solution containing acetic acid and sodium acetate

Question 6

Which of the following best explains why ammonia ($$\mathrm{NH_3$}) is $$considered a base according to the Brønsted-Lowry theory?

Accepted Answer

It accepts a proton from water to form $$\mathrm{NH_4$^+}.$$

Question 7

Which of the following substances is used to 'sweeten' acidic soil in agriculture?

Accepted Answer

Calcium hydroxide ($$\mathrm{Ca(OH)_2})$$

Question 8

Which of the following is a correct definition of a salt in chemistry?

Accepted Answer

An ionic compound composed of cations other than hydrogen and anions other than hydroxide

Question 9

Which of the following equations represents the reaction of a nonmetal oxide with water to form an acid?

Accepted Answer

$$\mathrm{SO_3$ + H_2O \rightarrow H_2SO_4}$$

Question 10

Which of the following is a real-world application of magnesium hydroxide ($$\mathrm{Mg(OH)_2}$$)?

Accepted Answer

It is used as an antacid and laxative.

Question 11

A buffer solution is important in the human body because:

Accepted Answer

It helps maintain a nearly constant pH when small amounts of acid or base are added.

Question 12

Which of the following is a limitation of the Arrhenius theory of acids and bases?

Accepted Answer

It only applies to reactions in aqueous solution.

Question 13

Which of the following is the correct formula for calculating pH?

Accepted Answer

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

Question 14

Which of the following is a possible consequence of excessive use of antacids?

Accepted Answer

Alkalosis, an increase in the pH of blood

Question 15

Which of the following substances is classified as a strong base but is only slightly soluble in water?

Accepted Answer

Calcium hydroxide ($$\mathrm{Ca(OH)_2})$$

Question 16

Which of the following is a conjugate acid–base pair?

Accepted Answer

$$\mathrm{HCl}$$ 	ext{ and } \mathrm{Cl^-}$

Question 17

Which of the following is a major contributor to acid rain?

Accepted Answer

Sulfur dioxide ($$\mathrm{SO_2$})$$

Question 18

Which of the following best describes the products of a neutralization reaction between a strong acid and a strong base?

Accepted Answer

Water and a salt

Question 19

Which of the following is a real-world use of sulfuric acid ($$\mathrm{H_2SO_4}$$)?

Accepted Answer

It is used in automotive batteries and fertilizer manufacturing.

Question 20

Which of the following statements about the pH scale is correct?

Accepted Answer

A solution with pH 2 is more acidic than a solution with pH 5.

Acids and Bases: Properties, Theories, and Applications

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