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When a chemical reaction is reversed the value of enthalpy is reversed in sign.(a) true(b) falseThis question was posed to me in a job interview.I would like to ask this question from Thermodynamics topic in division Thermodynamics of Chemistry – Class 11

Answer»

Right option is (a) TRUE

To explain I WOULD say: For example, the formation of AMMONIA has an enthalpy of -91.8 KJ per MOLE and the decomposition of ammonia has an enthalpy of + 91.8 KJ per Mol. So the above statement that when a chemical reaction is reversed the value of enthalpy is reversed in the sign is true.



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