Question

A current of $9.65$ amp flowing for $10$ minute deposits $3.0g$ of a metal. The equivalent wt. of the metal is:

• A. $10$
• B. $30$
• C. $50$
• D. $96.5$

Answer 1

The correct option is C $50$

$i=0.965amp$

$t=10min=10\times 60sec$

$m=3g$

Formula used $m=\frac{Atomicmass}{n\times F}\times i\times t$

$EquivalentWeight=\frac{AtomicMass}{n}$

$m=\frac{EquivalentWeight}{F}\times i\times t$

$3=\frac{EquivalentWeight}{96500}\times 10\times 60\times 0.965$

$Equivalentweight=50g$

The equivalent weight of the metal is $50g$