1.

In a Cu-voltameter, mass deposited in 30 s is m gm. If the time-current graph is shown in the following figure What is the electrochemical equivalent of Cu?

Answer»

m/2
m/3
m/4
`m/63.5`

SOLUTION :TOTAL charge PASSED in 30 SEC.
`=1/2xx100xx10+100xx10+100xx10+1/2xx100xx10`
`=3xx100xx10mAxxs`
`=3000xx10^(-3)amps=3 C`
W=ZQ
`thereforeZ=W/Q=m/3`


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