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The factor of DeltaG values is important...

The factor of `DeltaG` values is important in meltallurgy. The `DeltaG` values for the following reactions at `800^(@)C` are given as
`S_(2)(s)+2SO_(2)(g)to2SO_(2)(g),DeltaG=-544kJ`
`2Zn(s)+S_(2)(s)to2ZnS(s), DeltaG=-293kJ`
`2Zn(s)+O_(2)(g)to2Z nO_(s),DeltaG=-480kJ`
Then`DeltaG` for the reaction
`2ZnS(s)+3O_(2)(g)to2ZnO(s)+2SO_(2)(g)` will be

A

`-357kJ`

B

`-731kJ`

C

`773kJ`

D

`-229kJ`

Text Solution

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The correct Answer is:
B
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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)

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

Given C(s)+O_(2)(g)toCO_(2)(g) , DeltaH=-395 kJ S(s)+O_(2)(g)toSO_(2)(g) , DeltaH=-295 kJ CS_(2)(l)+3O_(2)(g)toCO_(2)(g)+2SO_(2)(g) , DeltaH=-1110 kJ The heat of formation of CS_(2)(l) is

The free energy change for the following reactions are given below C_(2)H_(2)(g)+(5)/(2)O_(2)(g)to2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234kJ C(s)+O_(2)(g)toCO_(2)(g),DeltaG^(@)=-394kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaG^(@)=-273kJ What is the standard free energy change for the reaction H_(2)(g)+2C(s)toC_(2)H_(2)(g) :-

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:

The free energy change for the following reactions are given below C_(2)H_(2)(g)+(5)/(2)O_(2)(g)to2CO_(2)(g)+H_(2)O(l) , DeltaG^(@)=-1234 kJ C(s)+O_(2)(g)toCO_(2)(g) , DeltaG^(@)=-394 kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l) , DeltaG^(@)=237 kJ What is the standard free energy change for the reaction H_(2)(g)+2C(s)toC_(2)H_(2)(g) ?

What is the equilibrium expression for this reaction ? 2ZnS(s)+3O_2(g) hArr 2ZnO(s)+2SO_2(g)

For the system S (s) + O_(2)(g) rarr SO_(2)(g) ?

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