First slide

Faraday's Laws

Question

Electrolysis can be used to determine atomic masses. A current of 0.550 A deposits 0.55 g of a certain metal in 100 minutes. calculate the atomic mass of the metal if eq. mass =mol. mass/3

Easy

A

100
B

45.0
C

48.25
D

144.75

Solution

$\begin{array}{l} \frac{0 .55}{M} \times 3 = \frac{0 .55 \times 100 \times 60}{96500} \\ \Rightarrow M = 48 .25 g / mol \end{array}$

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