Question

Write the names of 5 hydrated salts with their colour and formula.

Answer 1

One of the most common examples is CuSO4.5H2O, or copper(II) sulfate pentahydrate. It’s blue in colour.

Another example is Glauber’s salt, or sodium sulfate decahydrate. It’s formula is Na2SO4.10H2O. It occurs as white or colourless crystals.

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Answer 2

1) Copper sulphate pentahydrate 

Copper sulphate pentahydrate is a hydrated salt which contains 5 molecules of water of crytsallisation. Its chemical formula is CuSO4.5H2O. It is blue in colour. 

2) Ferrous sulphate

Ferrous sulphate is also a hydrated salt. The most commonly available form of hydrated ferrous sulphate contains seven molecules of water of crytsallisation and therefore it is represented by the chemical formula FeSO4.7H2O. This salt is blue-green in colour.

3.Gypsum (CaSO4.2H2O)

its equation can be written as follows..

CaSO4.1/2H2O+3/2H2O -------------- CaSO3.2H2O

Colour of pure gypsum is white

4.Magnesium sulfate

(MgSO. 4· 7H2O), commonly called Epsom salt.

White

5.Cobalt chloride

CoCl. 6H2O

Pink


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