Acids, Bases and Salts Quizzes: Test Your Knowledge

Question 1

In acid-base titrations, indicators play a crucial role. What's their main function, and how do they help us find the endpoint?

Accepted Answer

Indicators change color near the endpoint, signaling the equivalence point.

Answer

Indicators react with the acid or base to form a visible precipitate.

Answer

Indicators speed up the reaction, helping us reach the endpoint faster.

Answer

Indicators aren't needed in titrations, as the endpoint can be determined by the volume of reactants.

Question 2

What is the pH range of a neutral solution?

Accepted Answer

(7)

Answer

(0-7)

Answer

(7-14)

Answer

(0-14)

Question 3

Which property is characteristic of acids?

Accepted Answer

Reacting with metals to release hydrogen gas

Answer

Turning red litmus paper blue

Answer

Having a pH above 7

Answer

Feeling slippery to the touch

Question 4

Which property is NOT characteristic of acids?

Accepted Answer

Are slippery to the touch

Answer

React with metals to produce hydrogen gas

Answer

Change the colour of litmus paper to red

Answer

Are electrolytes

Question 5

What is the pH value of a neutral solution?

Accepted Answer

7

Answer

0-6

Answer

8-14

Answer

1-13

Question 6

What is the pH scale's range of values?

Accepted Answer

0 to 14

Answer

0 to 7

Answer

7 to 14

Question 7

What is the pH value that indicates a neutral solution?

Accepted Answer

7

Answer

0 - 6

Answer

8 - 14

Question 8

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Phosphoric acid

Question 9

Identify the strongest acid from the following options:

Accepted Answer

Hydrochloric acid

Answer

Ethanoic acid

Answer

Citric acid

Answer

Carbonic acid

Question 10

What is the pH of a solution that is chemically neutral?

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 11

Which of the following substances is classified as a salt?

Accepted Answer

Sodium chloride

Answer

Hydrochloric acid

Answer

Sodium hydroxide

Answer

Water

Question 12

In a neutralization reaction between an acid and a base, what are the primary products formed?

Accepted Answer

Salt and water

Answer

Heat and light

Answer

A gas

Answer

A color change

Question 13

Which acid is commonly used in car batteries?

Accepted Answer

Sulphuric acid

Answer

Hydrochloric acid

Answer

Nitric acid

Answer

Acetic acid

Question 14

Identify the conjugate base of hydrochloric acid:

Accepted Answer

Chloride ion

Answer

Hydrogen ion

Answer

Hydroxide ion

Answer

Water

Question 15

Which type of solution contains a weak acid and its salt?

Accepted Answer

A buffer solution

Answer

A solution with a strong acid and its salt

Answer

A solution with a weak base and its salt

Answer

A solution with a strong base and its salt

Question 16

Identify a hazardous property associated with acids:

Accepted Answer

Corrosive

Answer

Flammable

Answer

Explosive

Answer

Radioactive

Question 17

When sodium hydroxide reacts with hydrochloric acid, what is the name of the salt formed?

Accepted Answer

Sodium chloride

Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Water

Question 18

Acids, by definition, are substances that:

Accepted Answer

Donate protons (H+ ions)

Answer

Accept protons (H+ ions)

Answer

Neutralize bases

Answer

Dissolve in water

Question 19

A neutral solution has a pH of:

Accepted Answer

7

Answer

0

Answer

10

Answer

14

Question 20

Which of these is an example of a strong base?

Accepted Answer

Sodium hydroxide (NaOH)

Answer

Ammonium hydroxide (NH4OH)

Answer

Carbonic acid (H2CO3)

Answer

Acetic acid (CH3COOH)

Question 21

What is the product of a neutralization reaction between an acid and a base?

Accepted Answer

A salt and water

Answer

A salt and an acid

Answer

A base and water

Answer

A salt and a base

Question 22

In a titration, what is the primary role of an indicator?

Accepted Answer

To indicate the endpoint by changing colour

Answer

To neutralize the solution

Answer

To dissolve the reactants

Answer

To speed up the reaction

Question 23

Salts, by definition, are:

Accepted Answer

Ionic compounds formed by the neutralization reaction between an acid and a base

Answer

Covalent compounds that dissolve in water to form ions

Answer

Molecular compounds that conduct electricity

Answer

Polyatomic ions that have a net charge

Question 24

Which acid is found in vinegar?

Accepted Answer

Acetic acid (CH3COOH)

Answer

Hydrochloric acid (HCl)

Answer

Sulphuric acid (H2SO4)

Answer

Nitric acid (HNO3)

Question 25

What is a buffer solution?

Accepted Answer

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

Answer

A solution that has a very high pH

Answer

A solution that has a very low pH

Answer

A solution that is a poor conductor of electricity

Question 26

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Sodium hydroxide

Answer

Ammonia

Question 27

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

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 28

Which of the following reactions is a neutralisation reaction?

Accepted Answer

Acid + Base → Salt + Water

Answer

Acid + Metal → Salt + Hydrogen

Answer

Base + Metal → Salt + Hydrogen

Answer

Salt + Water → Acid + Base

Question 29

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

Accepted Answer

Sodium chloride

Answer

Potassium chloride

Answer

Calcium chloride

Answer

Copper chloride

Question 30

Which of the following is a weak base?

Accepted Answer

Ammonia

Answer

Sodium hydroxide

Answer

Potassium hydroxide

Answer

Calcium hydroxide

Question 31

What is the conjugate acid of the hydroxide ion (OH-)?

Accepted Answer

Hydrogen ion (H+)

Answer

Water molecule (H2O)

Answer

Sodium ion (Na+)

Answer

Chlorine ion (Cl-)

Question 32

Which of the following is a strong acid?

Accepted Answer

Nitric acid

Answer

Acetic acid

Answer

Sodium hydroxide

Answer

Carbonic acid

Question 33

What is the pH of a neutral solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 34

Which of the following reactions is a neutralisation reaction?

Accepted Answer

Acid + Base → Salt + Water

Answer

Salt + Base → Acid + Water

Answer

Acid + Metal → Salt + Hydrogen

Answer

Base + Metal → Salt + Hydrogen

Question 35

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

Accepted Answer

Sodium chloride

Answer

Potassium chloride

Answer

Calcium chloride

Answer

Magnesium chloride

Question 36

Which of the following is a characteristic of bases?

Accepted Answer

Feel slippery to the touch

Answer

Taste sour

Answer

Turn litmus paper red

Answer

Are corrosive to skin

Question 37

What is the role of an indicator in a neutralisation reaction?

Accepted Answer

To change colour to indicate the equivalence point

Answer

To provide energy for the reaction

Answer

To catalyse the reaction

Answer

To act as a reducing agent

Question 38

Which of the following acids is used in car batteries?

Accepted Answer

Sulfuric acid

Answer

Hydrochloric acid

Answer

Nitric acid

Answer

Acetic acid

Question 39

What is the name of the process by which a salt forms from the reaction of an acid and a base?

Accepted Answer

Neutralisation

Answer

Precipitation

Answer

Crystallisation

Answer

Oxidation

Question 40

What is the pH of a solution that is neutral?

Accepted Answer

7

Answer

0

Answer

14

Answer

It depends on the temperature.

Question 41

Which of the following reactions is a neutralisation reaction?

Accepted Answer

HCl + NaOH → NaCl + H2O

Answer

Na2CO3 + 2HCl → 2NaCl + H2CO3

Answer

2NaOH + CuSO4 → Cu(OH)2 + Na2SO4

Answer

Zn + 2HCl → ZnCl2 + H2

Question 42

What is the IUPAC name of the salt that forms when sulfuric acid reacts with sodium hydroxide?

Accepted Answer

Sodium sulfate

Answer

Sodium hydrogen sulfate

Answer

Sulfuric sodium

Answer

Sodium hypochlorite

Question 43

Which of the following is a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Ethanoic acid

Answer

Carbonic acid

Answer

Acetic acid

Question 44

Which of the following is a weak base?

Accepted Answer

Ammonia

Answer

Sodium hydroxide

Answer

Calcium hydroxide

Answer

Potassium hydroxide

Question 45

What is the pH of a solution with a hydroxide ion concentration of 1 x 10^-3 mol/dm³?

Accepted Answer

13

Answer

1

Answer

7

Answer

10

Question 46

What is the pH range for a neutral solution?

Accepted Answer

Equal to 7

Answer

Less than 7

Answer

Greater than 7

Answer

Between 0 and 14

Question 47

Which type of chemical reaction occurs when an acid reacts with a base?

Accepted Answer

Neutralisation

Answer

Oxidation

Answer

Reduction

Answer

Combustion

Question 48

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

Accepted Answer

Sodium chloride

Answer

Potassium chloride

Answer

Calcium chloride

Answer

Magnesium chloride

Question 49

Which substance is commonly used as an antacid to neutralise stomach acid?

Accepted Answer

Sodium bicarbonate

Answer

Hydrochloric acid

Answer

Sulphuric acid

Answer

Potassium hydroxide

Question 50

Which of the following is classified as a weak acid?

Accepted Answer

Acetic acid

Answer

Hydrochloric acid

Answer

Nitric acid

Answer

Sulphuric acid

Question 51

Write the balanced chemical equation for the reaction between magnesium oxide and hydrochloric acid.

Accepted Answer

MgO + 2HCl -> MgCl2 + H2O

Answer

MgO + HCl -> MgCl + H2

Answer

MgO + HCl -> MgOH + H2O

Answer

MgO + 2HCl -> MgCl + H2O2

Question 52

Which hazard is associated with handling acids?

Accepted Answer

Corrosive to skin

Answer

Flammable

Answer

Explosive

Answer

Radioactive

Question 53

What is the function of a salt bridge in an electrochemical cell?

Accepted Answer

To maintain electrical neutrality in the solutions

Answer

To allow electrons to flow between the electrodes

Answer

To act as a catalyst for the reaction

Answer

To prevent the electrodes from touching

Question 54

Within which pH range do neutral solutions fall?

Accepted Answer

Exactly 7

Answer

Below 7

Answer

Above 7

Answer

Between 1 and 14

Question 55

What is the primary function of an indicator in a neutralisation reaction?

Accepted Answer

Precise measurement of the reaction's endpoint

Answer

Identification of the acid or base's strength

Answer

Acceleration of the reaction process

Answer

Prevention of the reaction from occurring

Question 56

Which of the following indicators turns red in acidic solutions?

Accepted Answer

Litmus

Answer

Methyl orange

Answer

Phenolphthalein

Answer

Universal indicator

Question 57

What is the molarity of a solution containing 0.1 moles of sodium chloride in 1 liter of solution?

Accepted Answer

0.1 M

Answer

0.01 M

Answer

1 M

Answer

10 M

Question 58

Which of the following is 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 weak acid

Answer

A solution containing only a strong base

Question 59

Which of the following is a characteristic of strong acids?

Accepted Answer

They completely ionize in water, releasing all their hydrogen ions.

Answer

They partially ionize in water, releasing only some of their hydrogen ions.

Answer

They have a low pH.

Answer

They react slowly with bases.

Question 60

What is the pH of a neutral solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

It depends on the temperature.

Question 61

Which of the following is a base?

Accepted Answer

Sodium hydroxide

Answer

Potassium chloride

Answer

Hydrochloric acid

Answer

Carbon dioxide

Question 62

What is the product of a neutralization reaction between an acid and a base?

Accepted Answer

Salt and water

Answer

Salt and oxygen

Answer

Water and oxygen

Answer

Carbon dioxide and water

Question 63

What is the formula for sodium chloride?

Accepted Answer

NaCl

Answer

KCl

Answer

CaCl2

Answer

MgCl2

Question 64

Which of the following is a soluble salt?

Accepted Answer

Sodium chloride

Answer

Calcium carbonate

Answer

Silver chloride

Answer

Barium sulfate