Salt

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Water solutions of several salts:

Red: Cobalt(II) Nitrate (Co(NO3)2)

Orange: Potassium Dichromate (K2Cr2O7)

Yellow: Potassium Chromate (K2CrO4)

Cyan: Nickel(II) Chloride (NiCl2)

Blue: Copper Sulphate (CuSO4)

Purple: Potassium Permanganate (KMnO4)

A salt in chemistry is a compound of at least one metal and one non-metal. The salt that is sprinkled on food is sodium chloride (NaCl), which consists of a crystal of an equal number of sodium and chlorine atoms. «No Salt» is potassium chloride (KCl), which consists of a crystal of an equal number of potassium and chlorine atoms.

Acid-Base reactions[edit]

Acids form the following salts when reacting to a base:

Acid name Salt name
Hydrochloric acid Chlorides
Sulphuric acid Sulphates
Nitric acid Nitrates

An example of this would be Hydrochloric acid reacting with Sodium Hydroxide to form Sodium Chloride.

Test[edit]

See if you can work out which salts are made in the test below.

1

Sulphuric acid + Sodium Hydroxide

Sodium Hydroxide
Sodium Sulphate
Neutralization of substances

2

Sulphuric acid + Iron Hydroxide

Ferrous Sulphate
Ferrous Nitrate
Ferrous Hydroxide

3

Sulphuric acid + Copper Hydroxide

Copper Sulphate
Copper Nitrate
Copper Chloride

4

Hydrochloric acid + Lithium Hydroxide

Lithium Sulphate
Lithium Chloride
Lithium Hydrochloride

5

Hydrochloric acid + Calcium Hydroxide

Calcium Chloride
Calcium Nitrate
Calcium Sulphate

6

Sulphuric acid + Strontium Hydroxide

Strontium Hydroxide
Strontium Sulphate
Strontium Chloride

7

Nitric acid + Iron Hydroxide

Ferrous Nitrate
Ferrous Chloride
Ferrous Sulphate