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When an electric current is passed throu...

When an electric current is passed through acidified water, `112ml` of `H_(2)` gas at `NTP` is collected at the cathode is `965` seconds. The current passed in amperes is

A

2.0 amperes

B

1.5ampere

C

1 ampere

D

0.11ampere.,

Text Solution

Verified by Experts

The correct Answer is:
C
22,400 mL of hydrogen at STP=2g
1 mL of hydrogen at STP=`(2)/(22,400)`
112 mL of hydrogen at STP=`(2)/(22.400)`
112 mL of hydrogen at STP`=(2)/(22,400)xx112`
From first law of Faraday, W=Zit
`0.1=0.00001xx1xx965`
`therefore 1=(0.01)/(0.00001xx965)`
`[because "Z of hydrogen"=0.00001]`
=1 ampere
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