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How many grams of cobalt metal will be d...

How many grams of cobalt metal will be deposited when a solution of cobat (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes? (1 Faraday = 96,500C, Atomic mass of Co= 59u)

A

4

B

20

C

40

D

0.66

Text Solution

Verified by Experts

The correct Answer is:
B
`w=Zit`
`thereforew=(E_(B)xxIt)/(96500) " "(thereforeE_(B)=(M_(B))/(Z)=(59)/(2))`
`w=(59)/(2)xx(10xx109xx60)/(96500)`
w=19.9
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