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On the basic of the following Delta(r)G^...

On the basic of the following `Delta_(r)G^(Theta)` values at `1073K`:
`S_(1)(s) +2O_(2)(g) rarr 2SO_(2)(g) Delta_(r)G^(Theta) =- 544 kJ mol^(-1)`
`2Zn(s) +O_(2)(g) rarr 2ZnO(s) Delta_(r)G^(Theta) =- 480 kJ mol^(-1)`
`2Zn(s) +S_(2)(s) rarr 2ZnS(s) Delta_(r)G^(Theta) =- 293 KJ mol^(-1)`
Show that roasting of zinc sulphide to zinc oxide is a spontaneous process.

A

`O^(-)` ion will tend to resist the addition of another electron

B

Oxygen has high electron affinity

C

Oxygen is more electronegative

D

`O^(-)` ion has comparitively larger size than oxygen atom

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The correct Answer is:
A
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