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Deduce from the following E^@ values of ...

Deduce from the following `E^@` values of half cells , what combination of two half cells would result in a cell with largest potential :
(i) `A^(3-) rarr A^(2-) + e^- , E^@=1.5 V`
(ii) `B^(2+) +e^- rarrB^+ ,E^@ =-2.1V`
(iii)`C^(2+)+e^- rarrC^+,E^@=+0.5V`
(iv)`DrarrD^2 +2e^-,E^@=-1.5V`

A

`(i) and (iii)`

B

`(i) and (iv)`

C

`(ii) and (iv)`

D

`(iii) and (iv)`

Text Solution

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The correct Answer is:
C
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