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Coloured-transition-metal-solutions

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

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. See if you can work out which salts are made:

  1. Sulphuric acid + Sodium Hydroxide
  2. Sulphuric acid + Iron Hydroxide
  3. Sulphuric acid + Copper Hydroxide
  4. Hydrochloric acid + Lithium Hydroxide
  5. Hydrochloric acid + Calcium Hydroxide
  6. Sulphuric acid + Strontium Hydroxide
  7. Nitric acid + Iron Hydroxide

Answers at: Salt/answers