Salts

Question 1

What is neutralization?

Answer 1

Neutralization is a reaction in which an acid reacts with a salt to form salt and water.

Question 2

What is the positive metallic/ammonium ion for Copper (II) tetraoxosulphate (VI)?

Answer 2

Cu2+

Question 3

What is the positive negative radical ion for Copper (II) tetraoxosulphate (VI)?

Answer 3

SO4^2-

Question 4

What is the positive metallic/ammonium ion for Zinc trioxonitrate?

Answer 4

Zn^2+

Question 5

What is the negative radical ion ion for Zinc trioxonitrate?

Answer 5

NO3-

Question 6

What is the positive metallic/ammonium ion for Sodium Chloride?

Answer 6

Na+

Question 7

What is the negative radical ion for Sodium Chloride?

Answer 7

Cl-

Question 8

What is the positive metallic/ammonium ion for Potassium trioxocarbonate (IV) ?

Answer 8

K+

Question 9

What is the negative radical ion for Potassium trioxocarbonate ?

Answer 9

Co3^2-

Question 10

What is the positive metallic/ammonium ion for Iron (III) tetraoxosulphate (VI)?

Answer 10

Fe3+

Question 11

What is the negative radical ion for Iron (III) tetraoxosulphate (VI)?

Answer 11

SO4^2-

Question 12

What is the positive metallic/ammonium ion for Ammonium trioxonitrate (V)?

Answer 12

NH4+

Question 13

What is the negative radical ion for Ammonium trioxonitrate (V)?

Answer 13

NO3-

Question 14

What is formed when sulphuric acid (H2SO4) reacts with Potassium Hydroxide (KOH) ?

Answer 14

KSO4 + H2O

Question 15

Give the different types of salt.

Answer 15

• Normal Salt
• Acid Salt
• Basic Salt
• Double Salt
• Complex Salt

Question 16

Define a normal salt.

Answer 16

A normal salt is a substance where all the hydrogen (H+) ions in an acid are replaced by a metal or ammonium ion.

E.g Acid + Base ——> Salt + Water
HNO3 + Ca(OH)2 —-> Ca(NO3)2 + H2O

Question 17

Give some examples of normal salts.

Answer 17

• NaCl
• Na2SO4
• NH4Cl

Question 18

Define an acid salt.

Answer 18

An acid salt is a substance formed when part of the ionizable hydrogen ions are replaced by metallic/ammonium ions.

E.g Acid + Base ——> Salt + Water
H3PO4 + Ca(OH)2 —–> CaHPO4 + 2H2O

Question 19

Give examples of an acid salt.

Answer 19

• CaHSO4

- NaHSO4

Question 20

What must an acid salt have at the center?

Answer 20

An acid salt must have a hydrogen at the center.

Question 21

Can a mono basic acid form an acid salt? Why?

Answer 21

No. An acid must have more than one replaceable hydrogen atom to form a salt.

Question 22

Solve the following equations:

a. ) NH4OH (aa) + HCl (aa)
b. ) Ca(OH)2 + HNO3
c. ) H2CO3 + NH4OH

Answer 22

a. ) NH4Cl + H2O
b. ) Ca(NO3)2 + H2O
c. ) NH4CO3 + H2O

Question 23

What is a basic salt?

Answer 23

A basic salt contains a positive metallic ion, hydrogen (H+) and negative radical ion.

E.g. Zn(OH)2 + HCl —–> Zn(OH)Cl + H2O

   Mg(OH)2 + HNO3 ------> Mg(OH)NO3 + H2O

Question 24

Define a double salt.

Answer 24

A double salt contains two different positive metallic ions and common negative radical or a positive metallic ion & ammonium ion.

E.g. (NH4)2; SO4; Fe(SO)2; K2SO4; Na(SO4)2

Question 25

How is sodium salt prepared?

Answer 25

1. ) by reaction of metals above hydrogen in the activity series and dilute acid. 2. ) by reaction of bases and alkalis with dilute acid.

Question 26

What is a salt?

Answer 26

A salt is a compound formed when an acid is neutralized by a base or when the ionizable hydrogen atoms are replaced by ammonium ions or metallic ions.