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In the following half cell reactions, se...

In the following half cell reactions, select the better reducing agent :
`Mg^(2+) + 2e^(-) rarr Mg, E^(@)= -2.37 V`
`Fe^(3+) + 3e^(-) rarr Fe, E^(@) = -0.44 V`

A

`Mg^(2+)`

B

Mg

C

`Fe^(3+)`

D

Fe

Text Solution

Verified by Experts

The correct Answer is:
B
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The rusting of iron takes place as follows : 2H^(+) + 2e^(-) + (1)/(2)O_(2)(g) rarr H_(2)O (l) E^(@) = + 1.23 V Fe^(2+) + 2e^(-) rarr Fe(s) E^(@) = - 0.44 V Calculate Delta G^(@) for the net process

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