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A solution of Ni(NO$_3$)$_2$ is electrolysed between platinum electrodes using 0.1 Faraday electricity. How many moles of Ni will be deposited at the cathode?
(1) 0.05
(2) 0.20
(3) 0.15
(4) 0.10
Ni$^{2+}$ requires 2F per mole. 0.1F deposits $\frac{0.1}{2} = 0.05$ mol.
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