A Reaction has both delta H and delta S negative. how will the rate of reaction change with temperature Share with your friends Share 1 Tinku Jangra answered this ΔG=ΔH-TΔSMore is the negative value of ΔG, more is the spontaneity of reaction.ΔH and ΔS are negative. So, More is the temperature, the negative value of ΔG will be decreased. Hence, the spontaneity of the reacion will decrease. 2 View Full Answer Umakant Biswal answered this when the temperature will increase the extent of reaction will decrease. 0