A solution of `Ni (NO_(3))_(2)` was electrolysed between platinum electrodes using current of 5 amp for 30 min . What is the mass of Ni deposited at the cathode ?

Explanation

To find the mass of nickel (Ni) deposited at the cathode during the electrolysis of a nickel nitrate solution, we can follow these steps:

### Step 1: Identify the Reaction at the Cathode
The nickel nitrate dissociates in solution to give nickel ions (Ni²⁺) and nitrate ions (NO₃⁻). At the cathode, the nickel ions are reduced:
\[ \text{Ni}^{2+} + 2e^- \rightarrow \text{Ni} \]

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