Question

Which of the following salts does not contain water of crystallisation?

A

Blue vitriol

B

Baking soda

C

Washing soda

D

Gypsum

Medium

Solution

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Correct option is B)

Explanation:

  • The water molecules that are present in the crystals are called water of crystallisation.
  • The molecular formula of blue vitriol is
    It is called copper sulfate pentahydrate and It contains moles of water of crystallisation.
  • Sodium carbonate monohydrate is called washing soda.
    Its molecular formula is . It has mole of water of crystallisation.
  • Gypsum is called calcium sulphate dihydrate .
    It has mole of water of crystallisation.
  • Baking soda is sodium bicarbonate (). It is anhydrous.

Hence, baking soda does not contain water of crystallization.

Correct Option:

Solve any question of Acids, Bases and Salts with:-

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