Question

Calculate the e.m.f. of the cell, Zn | Zn²+ (0.01M) | | Cd²+ (0.1M) | Cd at 298 K [Given (E ºzn2+/Zn =-0.76V, E ° Cd²+/Cd =-0.40V​

Answer 1

Number of elements in universal set`(n(AuuB)) = 500`

Number of elements in first set`(n(A)) = 400`

Number of elements in first set`(n(B)) = 200`

Number of elements in both sets`(n(AnnB)) = 50`

Now, we know,

`n(AuuB) = n(A) + n(B) - n(AnnB)`

`n(AuuB) = 400+200-50 = 550`

But, we are given, `n(AuuB) = 500`.

So, the data given is incorrect.

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