1.

For a reaction to be spontaneous at all temperatures

Answer»

`Delta G` and `Delta H` should be NEGATIVE
`Delta G` and `Delta H` should be positive
`Delta G = Delta S =0`
`Delta H lt Delta G`

Solution :From Gibb's Helmholtz equation,
`Delta G=Delta H-T Delta S`
For a REACTION to be spontaneus, `Delta G` must be negative.If `Delta G` and `Delta H` are negative, then reaction will be SPONTANEOUS at all temperatures.


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