Acids, Bases, and Salts: Interactive Learning Quizzes for Chemistry Students

Question 1

Calculate the pH of a 0.1 M solution of HCl.

Accepted Answer

0

Answer

1

Answer

7

Answer

14

Question 2

Which of the following is a weak acid?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Nitric acid

Question 3

What is the conjugate base of NH4+?

Accepted Answer

NH3

Answer

OH-

Answer

H2O

Answer

Cl-

Question 4

Which property is NOT characteristic of acids?

Accepted Answer

Are slimy to the touch

Answer

React with metals to release hydrogen gas

Answer

Neutralize bases to form salts and water

Answer

Turn blue litmus paper red

Question 5

What is the primary function of a buffer solution?

Accepted Answer

To maintain a stable pH within a specific range

Answer

To increase the acidity of a solution

Answer

To decrease the basicity of a solution

Answer

To act as a strong electrolyte

Question 6

Which characteristic is unique to weak acids?

Accepted Answer

Partially dissociate in water

Answer

Possess a high equilibrium constant

Answer

Produce a large number of hydrogen ions

Answer

Behave as strong electrolytes

Question 7

In the Bronsted-Lowry theory, what is the role of a base?

Accepted Answer

Proton acceptor

Answer

Proton donor

Answer

Hydroxide ion producer

Answer

pH adjuster

Question 8

What is the pH value of a neutral solution at room temperature (25 °C)?

Accepted Answer

7

Answer

0

Answer

10

Answer

14

Question 9

Which of the following acids is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Ammonia

Question 10

Identify the conjugate base of the acid H2SO4.

Accepted Answer

SO42-

Answer

HSO4-

Answer

OH-

Answer

H3O+

Question 11

In a neutralization reaction, what are the products formed when NaOH reacts with HCl?

Accepted Answer

NaCl and H2O

Answer

Na2O and H2

Answer

NaClO and HOH

Answer

NaOH and HCl

Question 12

Which type of solution acts as a buffer, resisting changes in pH upon the addition of small amounts of acid or base?

Accepted Answer

A solution of a weak acid and its conjugate base

Answer

A solution of a strong acid and its conjugate base

Answer

A solution of a salt and water

Answer

A solution of a base and its conjugate acid

Question 13

Which of the following is NOT a characteristic of acids?

Accepted Answer

Forms basic salt

Answer

Conducts electricity in aqueous solution

Answer

Tastes sour

Answer

Turns blue litmus red

Question 14

Which of the following is a weak base?

Accepted Answer

NH3

Answer

KOH

Answer

NaOH

Question 15

What is the role of a buffer solution?

Accepted Answer

To resist changes in pH upon addition of small amounts of acid or base

Answer

To decrease the concentration of OH- ions

Answer

To increase the concentration of H+ ions

Question 16

Which of the following salts is soluble in water?

Accepted Answer

NaCl

Answer

CaCO3

Answer

AgCl

Answer

BaSO4

Question 17

Which of the following is a titration?

Accepted Answer

A controlled reaction between a known and an unknown solution

Answer

A reaction between a gas and a solution

Answer

A reaction between a solid and a liquid

Question 18

What is the equivalence point in a titration?

Accepted Answer

The point at which the moles of acid and base are equal

Answer

The point at which the pH is 7

Answer

The point at which the solution is colorless

Answer

The point at the halfway mark

Question 19

According to the Arrhenius theory, which of the following is a defining characteristic of an acid?

Accepted Answer

Releases H+ ions in water

Answer

Accepts OH- ions in water

Answer

Donates electrons

Answer

Forms ionic bonds

Question 20

A solution has a [H+] concentration of 10^-4 M. What is its pH?

Accepted Answer

4

Answer

14

Answer

7

Answer

10

Question 21

Which of the following reactions represents a neutralization reaction?

Accepted Answer

HNO3 + NaOH -> NaNO3 + H2O

Answer

CH3COOH + C2H5OH -> CH3COOC2H5 + H2O

Answer

2HCl + Mg -> MgCl2 + H2

Answer

H2SO4 + CuO -> CuSO4 + H2O

Question 22

What is the primary function of a buffer solution?

Accepted Answer

To resist changes in pH upon the addition of small amounts of acid or base

Answer

To decrease the pH of a solution

Answer

To increase the pH of a solution

Question 23

Which of the following is considered a strong acid?

Accepted Answer

HCl

Answer

CH3COOH

Answer

NH4OH

Answer

H2CO3

Question 24

What is the conjugate base of HSO4-?

Accepted Answer

SO4^2-

Answer

OH-

Answer

H2SO4

Answer

H2O

Question 25

Which of the following salts is insoluble in water?

Accepted Answer

CaCO3

Answer

NaCl

Answer

KNO3

Answer

NH4Cl

Question 26

Which of the following reactions is NOT an acid-base reaction?

Accepted Answer

2Na + 2H2O -> 2NaOH + H2

Answer

CH3COOH + NaOH -> CH3COONa + H2O

Answer

NH3 + HCl -> NH4Cl

Answer

HCl + KOH -> KCl + H2O