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Standard enthalpy change for combustion ...

Standard enthalpy change for combustion of methane is –890 kJ `"mol"^(-1)` and standard entropy change for the same combustive reaction is -242.98 `J.K^(-1)` at `25^@C`. Calculate `DeltaG^@` of the reaction.

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817.6 kJ `"mole"^(-1)`
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