For the electrochemical cell, Mg (s) ,| , Mg^ 2+ (aq,1 M ) , | , Cu^ 2+ (aq,1 M ) ,| , Cu (s) the standard...

Question

For the electrochemical cell, Mg (s) ,| , Mg^ 2+ (aq,1 M ) , | , Cu^ 2+ (aq,1 M ) ,| , Cu (s) the standard emf of the cell is 2.70 V at 300 K. When the concentration of Mg^ 2+ is changed to x M, the cell potential changes to 2.67 V at 300 K. The value of x is _____. (given, F R =11500 K V ^ -1 , where F is the Faraday constant and R is the gas constant, (10)=2.30)

Accepted Answer

10

JEE Advanced 2018 Chemistry question

Solution

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