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2Zn+O(2)to2ZnO," "DeltaG^(@)=-606J . ...

`2Zn+O_(2)to2ZnO," "DeltaG^(@)=-606J` . . . (i)
`2Zn+2Sto2ZnS," "DeltaG^(@)=-293J` . . .(ii)
`2S+2O_(2)to2SO_(2)(g)," "DeltaG^(@)=-408J` . . . (iii)
`DeltaG^(@)` for the following reaction
`2ZnS+3O_(2)to2ZnO+2SO_(2)`
would be:

A

`-731J`

B

`-1317J`

C

`+731J`

D

`+1317J`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaG^(@)=2DeltaG_(ZnO)^(@)+2DeltaG_(SO_(2))^(@)-2DeltaG_(ZnS)^(@)`
`=[-616-408]-[-293]`
`=-1024+293`
`=-731J`
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