Acids, Bases, and Salts: Interactive Quizzes and Learning Materials

Question 1

Acids have a characteristic property of having a:

Accepted Answer

Sour taste

Answer

Basic taste

Answer

Neutral taste

Answer

Sweet taste

Question 2

A substance with a pH value of 10 is considered:

Accepted Answer

Basic

Answer

Acidic

Answer

Neutral

Answer

Amphoteric

Question 3

Which of the following correctly describes a buffer solution?

Accepted Answer

A solution containing a weak acid and its conjugate base

Answer

A solution containing a strong acid and its conjugate base

Answer

A solution containing only a salt and water

Answer

A solution containing a metal and an acid

Question 4

The process of neutralizing an acid using a base is referred to as:

Accepted Answer

Neutralization

Answer

Titration

Answer

Titration

Answer

Precipitation

Question 5

What is the product of an acid-base reaction?

Accepted Answer

A salt and water

Answer

A salt and hydrogen gas

Answer

Water and carbon dioxide

Answer

A salt and a metal oxide

Question 6

Which substance can act as both an acid and a base?

Accepted Answer

Water

Answer

Sodium chloride

Answer

Carbon dioxide

Answer

Potassium hydroxide

Question 7

What is the name of the salt formed when hydrochloric acid reacts with sodium hydroxide?

Accepted Answer

Sodium chloride

Answer

Potassium chloride

Answer

Ammonium chloride

Answer

Calcium chloride

Question 8

What is the conjugate base of a weak acid?

Accepted Answer

A weak base

Answer

A strong acid

Answer

A strong base

Answer

A neutral substance

Question 9

Which of the following is an example of a salt?

Accepted Answer

Sodium chloride

Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Water

Question 10

What is the main purpose of an indicator in an acid-base titration?

Accepted Answer

To change color at the endpoint

Answer

To neutralize the solution

Answer

To act as a catalyst

Answer

To prevent the reaction from occurring

Question 11

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Phosphoric acid

Question 12

Which of the following substances is an acid?

Accepted Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Sodium chloride

Answer

Ammonium hydroxide

Question 13

What is the pH of a neutral solution at room temperature?

Accepted Answer

7

Answer

0

Answer

14

Answer

It depends on the temperature

Question 14

Which of the following reactions is a neutralization reaction?

Accepted Answer

Acid + Base → Salt + Water

Answer

Base + Salt → Acid + Water

Answer

Acid + Metal → Salt + Hydrogen

Answer

Salt + Water → Acid + Base

Question 15

What is the conjugate base of a weak acid?

Accepted Answer

A weak base

Answer

A strong acid

Answer

A strong base

Answer

A neutral molecule

Question 16

Which of the following salts is soluble in water?

Accepted Answer

Sodium chloride

Answer

Calcium carbonate

Answer

Copper(II) hydroxide

Answer

Iron(III) oxide

Question 17

What is the main difference between an acid and a base?

Accepted Answer

Bases produce hydroxide ions in water, while acids produce hydrogen ions

Answer

Acids turn litmus paper blue, while bases turn it red

Answer

Acids are corrosive, while bases are not

Answer

Bases taste bitter, while acids taste sweet

Question 18

What is the name of the salt produced when sulfuric acid reacts with potassium hydroxide?

Accepted Answer

Potassium sulfate

Answer

Potassium sulfite

Answer

Potassium bisulfate

Answer

Potassium hydrogen sulfate

Question 19

An essential property of acids is their ability to:

Accepted Answer

Produce hydrogen gas when reacting with metals

Answer

Feel slippery to the touch

Answer

Taste bitter

Answer

Turn red litmus paper blue

Question 20

A solution with a pH of 7 is considered:

Accepted Answer

Neutral

Answer

Acidic

Answer

Basic

Answer

Corrosive

Question 21

Identify the strong acid from the following options:

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Phosphoric acid

Question 22

What is the conjugate base of the acid HCl (hydrochloric acid)?

Accepted Answer

Cl-

Answer

H+

Answer

H2O

Answer

NaOH

Question 23

Which reaction below represents an acid-base neutralization reaction?

Accepted Answer

HCl + NaOH → NaCl + H2O

Answer

NaOH + CuSO4 → Na2SO4 + Cu(OH)2

Answer

CaCO3 + 2HCl → CaCl2 + H2O + CO2

Answer

NaOH + H2SO4 → Na2SO4 + H2O

Question 24

Which substance from the following options is a salt?

Accepted Answer

Sodium chloride

Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Water

Question 25

Which substance has a pH less than 7?

Accepted Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Sodium chloride

Answer

Ammonia

Question 26

What is the pH of a solution with a hydrogen ion concentration ([H+]) of 1 x 10^-7 mol/L?

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 27

Which of the following reactions between an acid and a base results in the formation of water and a salt?

Accepted Answer

Hydrochloric acid + Sodium hydroxide

Answer

Sodium hydroxide + Sodium hydroxide

Answer

Hydrochloric acid + Iron

Answer

Sodium chloride + Hydrochloric acid

Question 28

What is the gas produced when an acid reacts with a carbonate or hydrogencarbonate?

Accepted Answer

Carbon dioxide

Answer

Hydrogen

Answer

Oxygen

Answer

Nitrogen

Question 29

Which of the following is considered a weak acid?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Sulfuric acid

Answer

Nitric acid

Question 30

What type of reaction occurs when an acid reacts with an active metal, such as magnesium?

Accepted Answer

Single displacement

Answer

Neutralization

Answer

Precipitation

Answer

Combustion

Question 31

Which chemical reaction results in the formation of a salt and water?

Accepted Answer

Acid + Base → Salt + Water

Answer

Acid + Acid → Salt + Water

Answer

Base + Base → Salt + Water

Question 32

Which of the following is the precise definition of an acid?

Accepted Answer

A substance that releases hydrogen ions (H+ ions) in a chemical reaction

Answer

A substance that accepts hydrogen ions (H+ ions) in a chemical reaction

Answer

A substance that forms hydroxide ions (OH-) when dissolved in water

Answer

A substance that turns blue litmus paper red

Question 33

Which of the following is classified as a strong base?

Accepted Answer

Sodium hydroxide (NaOH)

Answer

Ammonium hydroxide (NH4OH)

Answer

Carbonic acid (H2CO3)

Answer

Acetic acid (CH3COOH)

Question 34

Which of the following chemical reactions represents a neutralization reaction?

Accepted Answer

Acid + Base → Salt + Water

Answer

Acid + Metal → Salt + Hydrogen

Answer

Base + Metal → Oxide + Hydrogen

Answer

Salt + Water → Acid + Base

Question 35

What is the conjugate base formed from a weak acid?

Accepted Answer

A weak base

Answer

A strong acid

Answer

A strong base

Answer

A neutral compound

Question 36

Which of the following salts is soluble in water?

Accepted Answer

Sodium chloride (NaCl)

Answer

Calcium carbonate (CaCO3)

Answer

Iron(III) oxide (Fe2O3)

Answer

Silver chloride (AgCl)

Question 37

Calculate the molarity of a solution containing 0.1 moles of sodium hydroxide (NaOH) dissolved in 1 liter of water.

Accepted Answer

0.1 M

Answer

0.05 M

Answer

0.2 M

Answer

0.5 M

Question 38

Identify the correct chemical formula for sulfuric acid.

Accepted Answer

H2SO4

Answer

HCl

Answer

HNO3

Answer

NaOH

Question 39

An acid can be defined as a substance that:

Accepted Answer

Donates protons (H+ ions)

Answer

Produces hydroxide ions (OH- ions)

Answer

Accepts protons (H+ ions)

Answer

Has a pH less than 7

Question 40

A solution with a pH of 12 can be classified as:

Accepted Answer

Strongly basic

Answer

Strongly acidic

Answer

Weakly basic

Answer

Weakly acidic

Question 41

A neutralization reaction occurs when:

Accepted Answer

An acid reacts with a base

Answer

An acid reacts with a metal

Answer

Two acids react with each other

Answer

A base reacts with a salt

Question 42

Which of the following is considered a weak acid?

Accepted Answer

Ethanoic acid (CH3COOH)

Answer

Sulfuric acid (H2SO4)

Answer

Hydrochloric acid (HCl)

Answer

Nitric acid (HNO3)

Question 43

Which of the following is a characteristic of a buffer solution?

Accepted Answer

It consists of a weak acid and its salt

Answer

It is a solution of a strong base

Answer

It is pure water

Answer

It is a mixture of a strong acid and a strong base

Question 44

What is the pH of a 0.1 M solution of HCl?

Accepted Answer

1

Answer

10

Answer

7

Answer

14

Question 45

A precipitation reaction occurs when:

Accepted Answer

AgNO3 and NaCl are mixed and form a solid precipitate

Answer

H2SO4 and Mg react to produce hydrogen gas

Answer

CH3COOH and NaOH react to form a salt and water

Answer

HCl and NaOH react to form water and a salt

Question 46

Which of the following **strong** acids has the chemical formula HCl?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Citric acid

Answer

Carbonic acid

Question 47

What is the pH value of a **neutral** solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 48

When hydrochloric acid reacts with sodium hydroxide, the resulting salt is called:

Accepted Answer

Sodium chloride

Answer

Water

Answer

Hydrochloric acid

Answer

Sodium hydroxide

Question 49

Which of the following is a **weak** base?

Accepted Answer

Ammonia (NH3)

Answer

Potassium hydroxide (KOH)

Answer

Sodium hydroxide (NaOH)

Answer

Calcium hydroxide (Ca(OH)2)

Question 50

What is the **primary** purpose of an acid-base indicator?

Accepted Answer

To indicate whether a solution is acidic, basic, or neutral

Answer

To neutralize acids

Answer

To change the pH of a solution

Question 51

Which of the following is a description of a **buffer solution**?

Accepted Answer

A solution that resists changes in pH when small amounts of acid or base are added

Answer

A solution with a pH of 0

Answer

A solution with a pH of 14

Question 52

The chemical process in which an acid reacts with a base is known as:

Accepted Answer

Neutralization

Answer

Reduction

Answer

Oxidation

Answer

Precipitation