1.

Equal quantities of electricity of passed through three voltameters containing FeSO_(4) , Fe_(2) (SO_(4))_(3) and Fe(NO_(3))_(3) . Consider the following statements in this regard : 1 . The amount of iron deposited in FeSO_(4) and Fe_(2)(SO_(4))_(3) are equal 2 . The amount of iron deposited in Fe(NO_(3))_(3) is two third of the amount of iron deposited in FeSO_(4) 3 . The amount of iron deposited is Fe_(2)(SO_(4))_(3) and Fe(NO_(3))_(3) is equal

Answer»

1 alone is correct
1 and 2 are correct
2 and 3 are correct
3 alone is correct .

SOLUTION :1. The O.S. of FE in `FeSO_(4)= + 2` and in `Fe_(2)(SO_(4))_(3) = + 3`
2 . The O.S. of Fe in `Fe(NO_(3))_(3) = + 3 ` and in `Fe(SO_(4)) = + 2`
3 . The O.S. of Fe in `Fe_(2)(SO_(4))_(3) = + 3` and in `Fe(NO_(3))_(3) = +3`
Hence STATEMENT 2 and 3 are correct .


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