Chemistry - Thermochemistry Question with Solution | TestHub

$\Delta G=\Delta H-T\Delta S$ As the reaction is accompanied by decrease in randomness, $\Delta G=\Delta H+T\Delta S[\because \Delta S$ is negative $]$ For reaction to be spontaneous $\Delta G$ should be negative which is possible only if reaction is highly exothermic i.e $\Delta H$ is negative. Exothermic reactions may be accompanied by increase or decrease of randomness.