Salts: Formation, Properties, and Applications - Interactive Learning Quiz

Question 1

What is the difference between a strong electrolyte and a weak electrolyte?

Accepted Answer

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

Answer

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

Answer

A strong electrolyte is a salt, while a weak electrolyte is an acid or base.

Answer

There is no difference between a strong electrolyte and a weak electrolyte.

Question 2

Which of the following reactions is an example of a precipitation reaction?

Accepted Answer

AgNO3 + NaCl → AgCl + NaNO3

Answer

NaOH + HCl → NaCl + H2O

Answer

2NaHCO3 → Na2CO3 + H2O + CO2

Answer

CH3COOH + NaOH → CH3COONa + H2O

Question 3

What is the name of the compound with the formula Fe2O3?

Accepted Answer

Iron(III) oxide

Answer

Iron(II) oxide

Answer

Iron(IV) oxide

Answer

Iron(V) oxide

Question 4

Which of the following elements is most likely to form a cation with a +2 charge?

Accepted Answer

Magnesium

Answer

Sodium

Answer

Aluminum

Answer

Phosphorus

Question 5

Which of the following salts is more likely to form a basic solution in water?

Accepted Answer

Ammonium chloride

Answer

Sodium chloride

Answer

Potassium fluoride

Answer

Copper sulfate

Question 6

What is the common name for the salt NaCl?

Accepted Answer

Table salt

Answer

Baking soda

Answer

Epsom salt

Answer

Limestone

Question 7

What type of reaction occurs when two aqueous solutions of salt solutions are mixed, resulting in the formation of a solid?

Accepted Answer

Ionic reaction

Answer

Acid-base reaction

Answer

Redox reaction

Answer

Esterification reaction

Question 8

Which of the following is **not** a property of salts?

Accepted Answer

React with water to form acids or bases

Answer

Electrolytes in aqueous solutions

Answer

Solid ionic compounds at room temperature

Answer

High melting points

Question 9

What is the conjugate base of the acid HBr?

Accepted Answer

Br-

Answer

HBrO

Answer

BrO-

Answer

HBrO2

Question 10

Which of the following salts is the most soluble in water?

Accepted Answer

NaCl

Answer

BaSO4

Answer

CaCO3

Answer

AgCl

Question 11

What is the name of the anion present in the salt sodium hydrogen carbonate?

Accepted Answer

Bicarbonate

Answer

Carbonate

Answer

Hydrogen carbonate

Answer

Carbonate(II)

Question 12

Which of the following salts is used as a buffer in solutions?

Accepted Answer

Sodium acetate

Answer

Potassium chloride

Answer

Calcium sulfate

Answer

Ammonium nitrate

Question 13

Which of the following compounds would you expect to be insoluble in water?

Accepted Answer

CaCO3

Answer

NaCl

Answer

CuSO4

Question 14

Which of the following factors does NOT affect the solubility of a salt?

Accepted Answer

Pressure

Answer

Temperature

Answer

Nature of the solvent

Question 15

Which of the following is the correct chemical formula for sodium chloride?

Accepted Answer

NaCl

Answer

Na2Cl

Answer

Na(Cl)

Answer

Cl2Na

Question 16

What is the expected pH of a saturated solution of sodium acetate?

Accepted Answer

Greater than 7

Answer

7

Answer

Less than 7

Answer

Cannot be determined

Question 17

Provide the systematic name for the salt with the formula Ca3(PO4)2.

Accepted Answer

Tricalcium phosphate

Answer

Calcium phosphate

Answer

Calcium tripolyphosphate

Answer

Phosphate calcium

Question 18

In a reaction between aqueous solutions of sodium chloride and silver nitrate, the solid precipitate formed is:

Accepted Answer

Silver chloride

Answer

Sodium nitrate

Answer

Sodium silver nitrate

Answer

Silver sodium chloride

Question 19

Which of the given substances qualifies as a strong acid?

Accepted Answer

Hydrochloric acid

Answer

Acetic acid

Answer

Carbonic acid

Answer

Ammonia

Question 20

Which of the given options acts as a Lewis acid?

Accepted Answer

H+

Answer

NH3

Answer

OH-

Answer

F-

Question 21

In methane (CH4), what is the hybridization of the carbon atom?

Accepted Answer

sp3

Answer

sp

Answer

sp2

Answer

sp3d

Question 22

Liquid water primarily exhibits which type of intermolecular force?

Accepted Answer

Hydrogen bonding

Answer

Dipole-dipole interactions

Answer

London dispersion forces

Answer

Ionic bonding

Question 23

What is the correct chemical formula for sodium chloride?

Accepted Answer

NaCl

Answer

Na2Cl

Answer

Na2Cl2

Answer

NaCl2

Question 24

Which of the following compounds is classified as a salt?

Accepted Answer

NH4Cl

Answer

NaOH

Answer

HCl

Answer

CH3OH

Question 25

Write the net ionic equation for the reaction between sodium hydroxide and hydrochloric acid:

Accepted Answer

OH- + H+ → H2O

Answer

NaOH + HCl → NaCl + H2O

Answer

Na+ + OH- + H+ + Cl- → NaCl + H2O

Answer

NaOH + H+ → Na+ + H2O

Question 26

Identify the salt commonly used as a fertilizer:

Accepted Answer

Potassium nitrate

Answer

Sodium chloride

Answer

Calcium carbonate

Answer

Magnesium sulfate

Question 27

Which of the following reactions represents a neutralization reaction in aqueous solution?

Accepted Answer

HCl + NaOH → NaCl + H2O

Answer

CaCO3 + 2HCl → CaCl2 + CO2 + H2O

Answer

2Na + Cl2 → 2NaCl

Answer

CuSO4 + Ba(OH)2 → Cu(OH)2 + BaSO4

Question 28

What is the conjugate base of a weak acid?

Accepted Answer

A weak base

Answer

A strong acid

Answer

A strong base

Answer

A salt

Question 29

Which of the following salts is commonly used as a food additive?

Accepted Answer

Sodium chloride

Answer

Potassium nitrate

Answer

Barium chloride

Answer

Lead acetate

Question 30

Which of the following factors does not affect the solubility of a salt in water?

Accepted Answer

Pressure

Answer

Temperature

Answer

Polarity of the solvent

Answer

Common ion effect

Question 31

What is the pH of a 0.1 M solution of sodium acetate (CH3COONa)? (Ka of acetic acid (CH3COOH) = 1.8 x 10^-5)

Accepted Answer

9.0

Answer

1.0

Answer

7.0

Answer

11.0

Question 32

What is the name of the salt formed when hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH)?

Accepted Answer

Sodium chloride

Answer

Sodium hypochlorite

Answer

Hydrochloric acid

Answer

Sodium hydroxide

Question 33

Which of the following is NOT a solubility rule for ionic compounds in water?

Accepted Answer

All carbonates are insoluble.

Answer

All nitrates are soluble.

Answer

Most chlorides are soluble.

Answer

All sulfates are soluble.

Question 34

Which of the following salts is used as a laxative?

Accepted Answer

Magnesium sulfate

Answer

Potassium chloride

Answer

Sodium carbonate

Answer

Calcium fluoride

Question 35

What is the molar mass of sodium chloride (NaCl)?

Accepted Answer

58.5 g/mol

Answer

23.0 g/mol

Answer

35.5 g/mol

Answer

71.0 g/mol

Question 36

Which of the following is **NOT** a characteristic of salts?

Accepted Answer

Have high melting and boiling points

Answer

Ionic compounds

Answer

Formed by the neutralization of an acid and a base

Answer

Typically soluble in water

Question 37

Which of the following reactions is **NOT** an ionic reaction?

Accepted Answer

CH4 + 2O2 -> CO2 + 2H2O

Answer

2Na + Cl2 -> 2NaCl

Answer

CaCO3 + 2HCl -> CaCl2 + H2O + CO2

Answer

NaOH + HCl -> NaCl + H2O

Question 38

What is the conjugate base of **H3PO4**?

Accepted Answer

HPO42-

Answer

PO43-

Answer

H2PO4-

Answer

OH-

Question 39

What is the IUPAC name for the salt with the formula FeCl3·6H2O?

Accepted Answer

Iron(III) chloride hexahydrate

Answer

Iron(III) chloride

Answer

Iron(III) chloride(VI) hydrate

Answer

Hexahydrated iron(III) chloride

Question 40

Which statement about salts is NOT true?

Accepted Answer

Salts are always acidic in solution.

Answer

Salts can exist as solids at room temperature.

Answer

Salts are ionic compounds.

Answer

Salts are formed by the reaction of an acid and a base.

Question 41

What is the chemical formula for the salt formed when potassium hydroxide (KOH) reacts with nitric acid (HNO3)?

Accepted Answer

KNO3

Answer

K2NO3

Answer

KOHNO3

Answer

KHNO3

Question 42

Which of these salts is soluble in water?

Accepted Answer

Sodium chloride (NaCl)

Answer

Silver chloride (AgCl)

Answer

Barium sulfate (BaSO4)

Answer

Calcium carbonate (CaCO3)

Question 43

A student dissolves a salt in water and observes the solution becoming warmer. This indicates that the dissolution process is:

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Neutral

Answer

Isothermal

Question 44

What is the net ionic equation for the reaction of hydrochloric acid (HCl) with sodium hydroxide (NaOH)?

Accepted Answer

H+ (aq) + OH- (aq) → H2O (l)

Answer

Na+ (aq) + Cl- (aq) → NaCl (aq)

Answer

HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)

Answer

H+ (aq) + Cl- (aq) → HCl (aq)

Question 45

Which of the following is a common use of salts?

Accepted Answer

Food preservation

Answer

Treating bacterial infections

Answer

Generating electricity from wind

Answer

Synthesizing polymers

Question 46

A solution of a salt in water has a pH of 9. This indicates that the salt is:

Accepted Answer

Basic

Answer

Acidic

Answer

Neutral

Answer

Amphoteric

Question 47

Which salt is commonly used as a fertilizer?

Accepted Answer

Ammonium nitrate (NH4NO3)

Answer

Sodium chloride (NaCl)

Answer

Calcium carbonate (CaCO3)

Question 48

When a solution of silver nitrate (AgNO3) is mixed with a solution of sodium chloride (NaCl), what precipitate forms?

Accepted Answer

Silver chloride (AgCl)

Answer

Silver nitrate (AgNO3)

Answer

Sodium nitrate (NaNO3)

Question 49

What is the molar mass of sodium sulfate (Na2SO4)?

Accepted Answer

142.04 g/mol

Answer

126.04 g/mol

Answer

88.06 g/mol

Answer

110.98 g/mol