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Q.

Calculate the emf of the following cell at 298 K:

Mg(s)Mg2+(0.1M)Cu2+1.0×103MCu(s)

 Given =Ecello=2.71V

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a

2.651 V

b

1.8 V

c

1.426 V

d

2.503 V

answer is C.

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Detailed Solution

ECell =ECell 00.059nlogMg2+Cu2+=2.71V0.0592log0.10.001=2.71V0.0592log102ECell =2.651V

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