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What is the enthalpy of the reaction from 50^oC to 52^oC if CP = 15 J/^oC, and the reference enthalpy is 25 J?

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What is the enthalpy of the reaction from 50^oC to 52^oC if CP = 15 J/^oC, and the reference enthalpy is 25 J?

(a) 10 J

(b) 35 J

(c) 55 J

(d) 65 J

I have been asked this question in class test.

Origin of the question is Merging Heat of Formation with Sensible Heat of Compound topic in division Application of Energy Balances in the Absence of Chemical Reactions and Energy Balances: How to Account for Chemical Reaction of Basic Chemical Engineering

1 Answer

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Right choice is (c) 55 J

To explain: Enthalpy of reaction = 25 + 50∫^5215.dT = 25 + 2*15 = 55 J.

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