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Q.

Which graph correctly correlates Ecell as a function of concentrations for the cell (for different values of M and M1) ?

Zns+Cu2+MZn2+M'+Cus;   E0cell=1.10 V, Ecell is on x-axis and log10Zn2+Cu2+ is on y - axis.

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a

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b

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c

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d

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answer is B.

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Detailed Solution

Given reaction;

Zns+Cu2+MZn2+M'+Cus,E0cell=1.10 V

Ecell  is on x axis and log10Zn2+Cu2+ is on y - axis 

Applying nernest equation

Ecell=Ecell00.059nlogOSRS

Where, E=  Potential of electrode

E°= Standard Potential

[OS] =  Concentration of Oxidation state

[RS] = Concentration of Reduction state

Ecell=Ecell00.0592logzn2+Cu2+(n=2)

logzn2+Cu2+=    20.059Ecell+Ecell0

logZn2+Cu2+=20.059Ecell+1.1

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