Chemistry in everydaylifeHard

Question

The negative Zn pole of a Daniell cell, sending a constant current through a circuit,decreases in mass by 0.13 g in 30 minutes. If the electrochemical equivalent of Zn and Cu are 32.5 and 31.5 respectively, the increase in the mass of the positive Cu pole in this time is

Options

A.0.180 g
B.0.141 g
C.0.126 g
D.0.242 g

Solution


I and t are same for both Cu and Zn electrodes
   
    mCu = = 0.126 g

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