1.

Mention the colour of FeSO_(4). 7H_(2)O crystals . How does this colour change upon heating ? Give balanced chemical equationfor the change.

Answer»

SOLUTION :Light green is the colour of crystalline `FeSO_(4).7H_(2)O`.
Light green changes to REDDISH BROWN or brown upon heating .
(i) `FeSO_(4).7H_(2)O overset Delta rarr FeSO_(4)+7H_(2)O`
(ii) `2FeSO_(4) overset "Heat" rarr Fe_(2)O_(3)+SO_(2)+SO_(3)`


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