A particular reaction at `27^(@)C` for which `DeltaH gt 0` and `DeltaS gt 0` is found to be non-spontaneous. The reaction may proceed spontaneously if

If Delta H gt 0 and Delta S gt 0 , the reaction proceeds spontaneously when :-

If Delta H gt 0 and Delta S gt 0 , the reaction proceeds spontaneously when :-

A reaction is non-spontaneous when:

The following reaction is non-spontaneous

For a non-spontaneous reaction, at 30^(@)C, DeltaH gt 0 & DeltaS gt 0 . The reaction becomes spontaneous, by

At a given temperature and pressure, for a chemical reaction DeltaH gt0 and DeltaS lt 0 . The reaction is non-spontaneous at all temperature. But the reverse reaction is spontaneous at all temperature-give reason.