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The change in Gibbs free energy of the s...

The change in Gibbs free energy of the system along provides a criterion for the spontaneity of a process at constant temperature and pressure. A change in the free energy of a sytem at constant temperature and pressure will be: `DeltaG_("system") = DeltaH_("system") - T DeltaS_("system")`
The free energy for a reaction having `Delta H= 31400` cal, `DeltaS= 32` cal `K^(-1) mol^(-1)` at `1000^(@)C` is

A

`-9336` cal

B

`-7386` cal

C

`-1936` cal

D

`+9336` cal

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta G = Delta H- T Delta S`
`= 31400 - 32 (1273) = - 9336` cal
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