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Stoichiometry

The colour of...

Question

The colour of hydrated crystal of Copper sulphate is:

A

white

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B

blue

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C

black

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D

green

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Solution

The correct option is B white
The crystals of copper sulphate are blue in colour due to the water of crystallization.
When they are heated they lose their water of crystallization to form anhydrous copper sulphate.
$C u S O_{4} .5 H_{2} O b l u e ⇌ C u S O_{4} w h i t e + 5 H_{2} O$

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