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A change in the free energy of a system ...

A change in the free energy of a system at constant temperature and pressure will be:
`Delta_(sys)G = Delta_(sys)H -T Delta_(sys)S`
At constant temperature and pressure
`Delta_(sys) G lt 0` (spontaneous)
`Delta_(sys)G = 0` (equilibrium)
`Delta_(sys)G gt 0` (non-spontaneous)
The free enegry for a reaction having `DeltaH = 31400 cal, DeltaS = 32 cal K^(-1) mol^(-1) at 1000^(@)C` is

A

`-9336 cal`

B

`-7006 cal`

C

`-2936 cal`

D

`+9006 cal`

Text Solution

Verified by Experts

`DeltaH = DeltaH - T DeltaS`
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