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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

`-357kJ`

B

`-731kJ`

C

`-773kJ`

D

`-229kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
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2Zn + O_(2) rightarrow 2ZnO, Delta G^(@) = -616 J 2Zn + S_(2) rightarrow 2ZnS, Delta G^(@) = -293 J S_(2) + 2O_(2) rightarrow 2SO_(2), Delta G^(@) = -408 J Delta G^(@) for the following reaction 2ZnS + 3O_(2) rightarrow 2ZnO+ 2 SO_(2) is

Find the formula of A ZnS + O_(2) rarr (A) + SO_(2) .

The DeltaG values for the following reactions at 800^(@)C are S_(2)(g) + 2O_(2)(g) to 2SO_(2)(g) DeltaG = - 544 kJ 2Zn (s) + S_(2)(g) to 2ZnS(s) DeltaG = - 293 kJ 2Zn(s) + O_(2)(g) to 2ZnO(S) DeltaG = - 480 kJ The DeltaG for the reaction: 2ZnS(s) + 3O_(2)(g) to 2ZnO(s) + 2SO_(2)(g) is

The factor of DeltaG values is important in metallurgy. The DeltaG values for the following reactions at 800°C are given as : S_(2)(s) + 2O_(2)(g) to 2SO_(2)(g), DeltaG =-544 kJ 2Zn(s) + S_(2)(s) to 2ZnS(s), DeltaG=-293 kJ 2Zn(s) + O_(2)(g) to 2ZnO(s), DeltaG = -480 kJ Calculate the DeltaG for the reaction: 2ZnS(s) + 3O_(2)(g) to 2ZnO(s) + 2SO_(2)(g)

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