Question 1

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

Accepted Answer

A substance that donates an $H^+$ ion.

Question 2

Which of the following is the correct balanced equation for the neutralization reaction between hydrochloric acid and sodium hydroxide?

Accepted Answer

$HCl + NaOH \rightarrow NaCl + H_2O$

Question 3

Which of the following pairs are conjugate acid-base pairs?

Accepted Answer

$NH_3$ and $NH_4^+$

Question 4

Which of the following is NOT one of the six common strong acids?

Accepted Answer

$HNO_2$

Question 5

What is the conjugate base of $HNO_3$ after it donates a proton to water?

Accepted Answer

$NO_3^-$

Question 6

Which statement best describes the amphoteric nature of water?

Accepted Answer

Water can act as either an acid or a base depending on the reaction partner.

Question 7

A student mixes $HBr$ and $KOH$ in a beaker. What are the products of this reaction?

Accepted Answer

$KBr$ and $H_2O$

Question 8

Which of the following equations represents the ionization of a strong acid in water?

Accepted Answer

$HCl + H_2O \rightarrow H_3O^+ + Cl^-$

Question 9

In the reaction $NH_3 + H_2O \rightleftharpoons NH_4^+ + OH^-$, which species acts as the acid?

Accepted Answer

$H_2O$

Question 10

Which of the following best explains why $H_2SO_4$ is considered a strong acid?

Accepted Answer

It completely donates its protons to water, resulting in nearly 100% dissociation.

Question 11

A solution contains $0.10$ M $HCl$. What is the concentration of $H_3O^+$ in the solution?

Accepted Answer

$0.10$ M

Question 12

Which of the following is the correct conjugate acid-base pair for the reaction $H_2O + HSO_4^- \rightleftharpoons H_3O^+ + SO_4^{2-}$?

Accepted Answer

$HSO_4^-$ / $SO_4^{2-}$

Question 13

If $0.025$ mol of $NaOH$ is added to $50.0$ mL of $0.50$ M $HCl$, what is the resulting pH? (Assume total volume is additive and $HCl$ is a strong acid.)

Accepted Answer

pH = 0.30

Question 14

Which of the following statements about neutralization reactions is correct?

Accepted Answer

They involve the reaction of an acid and a base to form water and a salt.

Question 15

Which of the following is the correct Bronsted-Lowry reaction for $HNO_3$ in water?

Accepted Answer

$HNO_3 + H_2O \rightarrow NO_3^- + H_3O^+$

Question 16

Which of the following best describes the relationship between $H_2O$ and $OH^-$ in the context of acid-base chemistry?

Accepted Answer

$H_2O$ is the conjugate acid of $OH^-$.

Question 17

A student claims that $NH_3$ is a strong base because it produces $OH^-$ in water. Which of the following best evaluates this claim?

Accepted Answer

$NH_3$ is a weak base because it only partially reacts with water to produce $OH^-$.

Question 18

Which of the following is a correct statement about conjugate acid-base pairs?

Accepted Answer

A conjugate acid is formed when a base gains a proton.

Question 19

Which of the following best explains why $H_2O$ can act as both an acid and a base?

Accepted Answer

Because it can both donate and accept a proton depending on the reaction partner.

Question 20

In the reaction $HClO_4 + H_2O \rightarrow H_3O^+ + ClO_4^-$, what is the conjugate base?

Accepted Answer

$ClO_4^-$

Acids, Bases, and Neutralization: Key Concepts in General Chemistry

Study Guide - Practice Questions

Study Guide - Flashcards