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Two electrolytic cells containing molten...

Two electrolytic cells containing molten solutions of Nickel chloride and Aluminium chloride are connected in series.If same amount of electric current is passed through them, what will be the weight of Nickel obtained when 18 gm of Aluminium is obtained ? (`Al-27" gm"//"mole", Ni-58.5" gm"//"mole"^(-1)`)

A

58.5 g

B

29.25 g

C

117 g

D

5.85 g

Text Solution

Verified by Experts

The correct Answer is:
A
(a) According to Farady's second law of electrolysis
`("Mass of Ni deposited")/("Mass of Al deposited")=("Equivalent mass of Ni")/("Equivalent mass of Al")`
`=((58.5//2 g " equiv"^(-1)))/((27.0//3 g "equiv"^(-1)))`
Mass of Ni deposited `=((18 g)xx(29.25))/((9.0))=58.5 g`
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