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Calculate free energy change at 27^(@)C ...

Calculate free energy change at `27^(@)C` for the reaction
`H _(2) + Cl _(2) to 2 HCl`
Given bond enthalpies of `H_(2), Cl_(2)` and HCl are 435, 240 and 430 kJ `mol^(-1)` respectively and entropies of `H_(2), Cl_(2) ` and HCl are 131,223 and 187 `JK^(-1)` respectively

A

`-200 kJ mol ^(-1)`

B

`+ 191 kJ mol ^(-1)`

C

`- 191 kJ mol ^(-1)`

D

zero

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