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Consider a fuel cell supplied with 1 mol...

Consider a fuel cell supplied with 1 mol of `H_(2)` gas and 10 moles of `O_(2)` gas if fuel cell is operated at 9.65 mA current how long will it deliver power
Assume 1 F = 96500 C mole of electrons)

A

`1xx10^(6)`

B

`0.5xx10^(6)` s

C

`2xx10^(6)s`

D

`4xx10^(6)s`

Text Solution

Verified by Experts

The correct Answer is:
C
(i) `because W=zit`
and `z=(at.wt)/(nF)`
(ii) `H_(2)+1/2O_(2)rarrH_(2)O`
Thus by 1 mole of `H_(2)(g)` we get 1 mol of `H_(2)O`
Hence n=2
`t(time)=(w)/(zi)=(w)/(At.wt)/(nF)xxi`
t(in sec) =`(2xx96500)/(0.0965)=2xx10^(6) sec`
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