Current Electricity and Electrical InstrumentVery Hard
Question
The electrochemical equivalent of a metal is 3.3 × 10-7 kg per coulomb. The mass of the metal liberated at the cathode when a 3 A current is passed for 2 seconds will be
Options
A.19.8 × 10-7 kg
B.9.9 × 10-7 kg
C.6.6 × 10-7 kg
D.1.1 × 10-7 kg
Solution
m = Zit,
m = 3.3 × 10-7 × 3 × 2 = 19.8 × 10-7 kg.
m = 3.3 × 10-7 × 3 × 2 = 19.8 × 10-7 kg.
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