State the thermodynamic condition of spontaneous occurance of a process?

Explanation

For spontaneous occurrence,`DeltaG` of the process mustbe `( lt 0 , i.e., -ve`. .This can be so under the following conditions `:` (i) `DeltaH ` is negative and`DeltaS` is positive( at any temperature).
(ii) If `DeltaH` and`DeltaS` both are positive , then T should be so high that`TDelta S gt Delta H`.
(iii) If both `Delta H ` and`DeltaS` are negative, then T should be solow that `T Delta lt DeltaH `