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When electric current is passed through acidified water for 1930s, 1120 mL of `H_(2)` gas is collected (at STP) at the cathode. What is the current passed in ampere?

A

0.05

B

0.5

C

5

D

50

Text Solution

Verified by Experts

The correct Answer is:
C
Weight of `H_(2)` gas `=1120/2.2400 xx2=0.1g`
According to Faraday's first law,
`C=m/(et)=(0.1xx96500)/(1xx1930)=5amp`
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