In a Cu-voltameter, the mass deposited in 30s is ′m′g. If the time-current graph is shown in the following figure, what is the electrochemical equivalent of Cu?
A
m2
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B
m3
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C
m4
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D
m63.5
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Solution
The correct option is Bm3 Total charge passed: =12×100×10+100×10+100×10+12×100×10 =3×100×10mA×s =3000×10−3amps=3C