The colour of the salt formed due to the removal of water of crystallization from hydrated copper sulphate upon heating is _________.

orange

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white

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red

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green

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Solution

The correct option is B white
White colour salt is formed when blue hydrated copper sulphate is heated, due to the removal of water molecule from the salt.

The colour of crystalline salts is usually due to the presence of water of crystallization. When such a crystal is sufficiently heated, it loses its water of crystallization and usually the crystal changes its colour to white.

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What happen when copper sulphate crystals are heated in a test tube?

Statements:
i. It loses its water of crystallization
ii. White coloured powder is formed
Select the correct options for both statements.

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