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An electric current is passed through a ...

An electric current is passed through a copper voltmeter and a water voltameter connected in series. If the copper voltameter now weights 16 mg less, hydrogen liberated at the cathode of the water voltmeter measures at STP about

A

4.0 ml

B

5.6 ml

C

6.4 ml

D

8.4 ml

Text Solution

Verified by Experts

The correct Answer is:
B
`W_(1)/W_(2) = E_(1)/E_(2)`
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