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Given : A^(2+)+2e^(-) rarr A(s)" "E...

Given `:`
`A^(2+)+2e^(-) rarr A(s)" "E^(c-)=0.08V`
`B^(o+)+e^(-)rarr B(s)" "E^(c-)=-0.64V`
`X_(2)(g)+2e^(-) rarr 2X^(c-)" "E^(c-)=1.03V`
Which of the following statements is `//` are correct ?

A

`X_(2)(g)` will oxidize both `(A)` and `(B)`.

B

`A^(2+)` will oxidize both `(A)` and `(B)`

C

The reaction
`2X^(c-)(1.0M)+A^(2+)(1.0M) rarr X_(2)(1 atm)+A(s)`
will be spontaneous.

D

The oxidizing power of `A^(2+),B^(o+),` and `X_(2)(g)` is in the order `X_(2)gtA^(2+)gtB^(o+)`

Text Solution

Verified by Experts

The correct Answer is:
a,b,d
`E^(c-)._(cell)` corresponding to the reaction is `:`
`2X^(c-)(1M)+A^(2+)(1.0M) rarr X_(2)(1atm)+A(s)`
`E^(c-)._(cell)E^(c-)._(A^(2+)|A)-(E^(c-)._(X2|2X^(c-))=0.08-1.30=-1.22V`
`E^(c-)._(cell)` is negative, so `DeltaG^(c-)` will be `(+ve)` and hence reaction `(c)` will not be feasible.
So, statement `(c)` is wrong. Statements `(a),(b),` and `(d)` are correct.
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