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Representation of Cell

Blue colour o...

Question

Blue colour of copper sulfate is due to:

A

presence of sulphur

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B

presence of water of crystallisation

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C

presence of copper

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D

none

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Solution

The correct option is B presence of water of crystallisation
After hydration, it gets water of crystallization.
$C u S O_{4} + 5 H_{2} O ⟶ C u S O_{4} \cdot 5 H_{2} O$
That is responsible for colour.

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