Question

Electrolysis can be used to determine atomic masses. A current of $0.550A$ deposits $0.55$. If a certain metal in $100minutes$. Calculate the atomic mass of the metal if eq. mass $-$ mole mass $/3$.

• A. $100$
• B. $45.0$
• C. $48.25$
• D. $144.75$

Answer 1

The correct option is C $48.25$

According to Faraday's law of Electrolysis

$W=\left(\frac{M}{nf}\right).\frac{I.t}{F}$

$0.55ℊ=\left(\frac{M}{3}\right)\times 0.550\times (100\times 60)s$

$M=48.25ℊ$

Thus atomic mass of metal is $48.25$