64. In the exothermic reaction the enthalpy of reaction is(AIIMS 2001) – InterviewSolution

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1.	64. In the exothermic reaction the enthalpy of reaction is(AIIMS 2001)always:(a) zero(c) negative(b) positive(d) none of these
Answer» A system that releasesheatto the surroundings, anexothermic reaction, has a negative ΔH by convention, because theenthalpyof the products is lower than theenthalpyof the reactants of the system. Theenthalpiesof thesereactionsare less than zero, and are thereforeexothermic reactions.

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