Question 1

Which of the following statements best describes the difference between Arrhenius and Brønsted–Lowry definitions of acids and bases?

Accepted Answer

Arrhenius acids and bases must be in aqueous solution, while Brønsted–Lowry acids and bases can exist in any phase.

Question 2

Which of the following equations correctly represents the ionization of sulfuric acid ($$\mathrm{H_2SO_4}) in $$water?

Accepted Answer

$$\mathrm{H_2SO_4 (aq) \rightarrow 2H^+ (aq) + SO_4$^{2-} (aq)}$$

Question 3

A solution has a hydrogen ion concentration of $$1 	imes 10$$^{-9}$$ M. What is its pH?

Accepted Answer

$$9$$

Question 4

Which of the following is a strong acid?

Accepted Answer

$$\mathrm{H_2SO_4}$$

Question 5

Which of the following compounds would create a basic solution when added to water?

Accepted Answer

$$\mathrm{MgO}$$

Question 6

What are the products of the neutralization reaction between $$\mathrm{$$HNO_3$$}$$ and $$\mathrm{KOH}$$?

Accepted Answer

$$\mathrm{H_2O}$$ and $$\mathrm{$$KNO_3$$}$$

Question 7

Which of the following best describes a buffer solution?

Accepted Answer

A solution containing a weak acid and its conjugate base that resists changes in pH when small amounts of acid or base are added.

Question 8

Which of the following is the correct formula for the base formed when barium oxide ($$\mathrm{BaO}) $$reacts with water?

Accepted Answer

$$\mathrm{Ba(OH)_2}$$

Question 9

Which of the following is the conjugate base of $$\mathrm{H_2CO_3}$$?

Accepted Answer

$$\mathrm{$$HCO_3$$^-}$$

Question 10

A solution turns blue litmus paper red. Which of the following is most likely true about the solution?

Accepted Answer

It is acidic.

Question 11

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

Accepted Answer

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

Question 12

Which of the following is the correct pH for a solution with $$[\mathrm{H_3O^+}] = 8 	imes 10$$^{-4}$$ M?

Accepted Answer

$$3.1$$

Question 13

Which of the following is a real-world example of a neutralization reaction?

Accepted Answer

Taking an antacid to relieve heartburn.

Question 14

Which of the following is the conjugate acid of $$\mathrm{NH_3$}$$?

Accepted Answer

$$\mathrm{NH_4$^+}$$

Question 15

Which of the following oxides is responsible for acid rain?

Accepted Answer

$$\mathrm{SO_2$}$$

Question 16

A solution has a pH of 2. What is the hydrogen ion concentration?

Accepted Answer

$$1 	imes 10$$^{-2}$$ M

Question 17

Which of the following best describes the taste and feel of bases?

Accepted Answer

Bitter taste and slippery feel

Question 18

Which of the following is the correct equation for the reaction of water with the Brønsted acid $$\mathrm{$$HNO_3$$}$$?

Accepted Answer

$$\mathrm{$$HNO_3$$ + H_2O \rightarrow H_3O^+ + NO_3$^-}$$

Question 19

Which of the following best describes a salt in chemistry?

Accepted Answer

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

Question 20

Which of the following is the correct formula for the acid formed when selenium dioxide ($$\mathrm{$$SeO_2$$}) $$reacts with water?

Accepted Answer

$$\mathrm{H_2SeO_3}$$

Acids and Bases: Properties, Definitions, Reactions, and Applications

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