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Cost of electricity for the production o...

Cost of electricity for the production of X litre `H_(2)` at STP at cathode is Rs. X, then cost of electricity for the production of X litre `O_(2)` gas at STP at anode will be :(assume 1 "mole" of electrons as one unit of electricity)

A

2x

B

4x

C

16x

D

32x

Text Solution

Verified by Experts

(B) `Fe^(+2) rarrFe+Fe^(+3)` , `E_(cell)=E_(C)-E_(A)`
=-0.44-0.77
So spontaneous reaction is `Fe+Fe^(+3)rarrFe^(+2)`
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