Which condition does not satisfy the spontaneity criteria ofa reaction at constant temperature and pressure (1) `Delta H lt 0, DeltaS lt 0`,
(2) `Delta Hgt0,DeltaS lt 0`
(3) `DeltaH gt 0,DeltaS gt0`, (4) `DeltaH lt0,DeltaS gt0`?

Explanation

At constant temperature and pressure, a reaction will be spontaneous if `DeltaG=-ve` for the reaction at that temperature and pressure. If `DeltaG=+ve`, the reaction will be non-spontaneous. At a constant temperature and pressure, `DeltaG=DeltaH-TDeltaS`. if `DeltaH gt0 and DeltaS lt 0`, then `DeltaG=+ve`. thus, a reaction will be non-spontaneous if `DeltaH gt0 and DeltaS lt 0`.