MCQ
In electrolysis of aquous $Ni(NO_3)_2$ solution using $Ni$ electrodes on passing $1$ equivalent charge, mass of cathode $(Ni = 59, I = 127)$
- ✓Increases by $29.5\, gm$
- BIncreases by $59\, gm$
- CDecreases by $127\, gm$
- DNone of these
✓
Answer
Correct option: A.
Increases by $29.5\, gm$
a
$1$ eq charge produces $1$ eq of metal.
$1$ eq charge produces $1$ eq of metal.
$\left(\mathrm{Ni}^{+2}+2 \mathrm{e}^{-} \rightarrow \mathrm{Ni}\right)$
$\mathrm{E}_{\mathrm{w}}=\frac{\mathrm{M}_{\mathrm{w}}}{\mathrm{v} \mathrm{f}}=\frac{59}{2}=29.5\, \mathrm{g}$
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