$$\mathrm{HF/F^-}$$ \text{ and } \mathrm{H_2O/H_3O^+}$

Question 1

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

Accepted Answer

A substance that donates an $$\mathrm{H^+}$$ ion

Question 2

What is the correct name for $$\mathrm{$$HNO_2$$}$$ when dissolved in water?

Accepted Answer

Nitrous acid

Question 3

Which of the following equations correctly represents the dissociation of hydrochloric acid in water?

Accepted Answer

$$\mathrm{HCl(g) + H_2O(l) \rightarrow H_3O^+(aq) + Cl^-(aq)}$$

Question 4

Which of the following is a strong base?

Accepted Answer

$$\mathrm{NaOH}$$

Question 5

Identify the conjugate acid-base pairs in the following reaction: $$\mathrm{HF(aq) + H_2O(l) \rightleftharpoons F^-(aq) + H_3O^+(aq)}$$

Accepted Answer

$$\mathrm{HF/F^-}$$ 	ext{ and } \mathrm{H_2O/H_3O^+}$

Question 6

Which of the following acids is considered strong?

Accepted Answer

$$\mathrm{HBr}$$

Question 7

A solution of $$\mathrm{Ca(OH)_2} is $$prepared. Which statement is correct?

Accepted Answer

$$\mathrm{Ca(OH)_2} is a $$strong base and dissociates completely in water.

Question 8

Which of the following best describes the role of water in the reaction $$\mathrm{NH_3$ + H_2O \rightleftharpoons NH_4$^+ + OH^-}$$?

Accepted Answer

Water acts as a Brønsted-Lowry acid by donating an $$\mathrm{H^+}$$ ion.

Question 9

Which of the following is the correct name for $$\mathrm{H_2SO_4}$$?

Accepted Answer

Sulfuric acid

Question 10

A student adds $$\mathrm{KOH} to $$water. Which equation best represents the dissociation?

Accepted Answer

$$\mathrm{KOH(s) \xrightarrow{H_2O} K^+(aq) + OH^-(aq)}$$

Question 11

Which of the following statements about strong acids is correct?

Accepted Answer

Strong acids dissociate completely in water to produce $$\mathrm{H_3O^+}$$ ions.

Question 12

Which of the following is the correct conjugate base of $$\mathrm{H_2O}$$?

Accepted Answer

$$\mathrm{OH^-}$$

Question 13

Which of the following is a characteristic property of bases?

Accepted Answer

They turn litmus paper blue.

Question 14

Which of the following is the correct name for $$\mathrm{$$HIO_3$$}$$?

Accepted Answer

Iodic acid

Question 15

Which of the following best describes a weak base?

Accepted Answer

A substance that is a poor acceptor of $$\mathrm{H^+}$$ ions and produces few ions in solution.

Question 16

Which of the following is the correct name for $$\mathrm{Ca(OH)_2}$$?

Accepted Answer

Calcium hydroxide

Question 17

Which of the following is a conjugate acid in the reaction $$\mathrm{NH_3$ + H_2O \rightleftharpoons NH_4$^+ + OH^-}$$?

Accepted Answer

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

Question 18

Which of the following is the correct name for $$\mathrm{H_2CO_3}$$?

Accepted Answer

Carbonic acid

Question 19

Which of the following best describes the difference between a strong and a weak acid?

Accepted Answer

A strong acid dissociates completely in water, while a weak acid only partially dissociates.

Acids and Bases: Bronsted-Lowry Theory and Properties

Guida di studio - Domande di pratica