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Which of the following conditions will a...

Which of the following conditions will always lead to a non-spontaneous change ?

A

`DeltaH " and "DeltaS " both "+ve`

B

`DeltaH=-ve,DeltaS=+ve`

C

`DeltaH=+ve,DeltaS=-ve`

D

`DeltaH=-ve,DeltaS=-ve`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`DeltaG=DeltaH-TDeltaS`
`(a) DeltaH=+ve,DeltaS=+ve` at low temperature `DeltaG=+ve`
(b) `DeltaH=-ve,DeltaS=+ve, DeltaG=-ve`
at any temperature.
`(c )DeltaH=+ve, DeltaS=-ve, DeltaG=+ve` at any temperature
(d) `DeltaH=-ve, DeltaS=-ve, DeltaG=+ve` at high temperature
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