1.

how many grams of cobalt metal will be deposited when solution of cabalt (II) chloride is electrolyzed with a current of 10 amperes for 109 minutes (1Faraday=96,500 C, Atomic mass of Co=59u)A. 4B. 20C. 40D. 0.66

Answer» Correct Answer - 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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