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Question 800001
JEE Chemistry · Easy

Chemical Thermodynamics and Thermochemistry: Basic definitions MCQ

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Basic definitionsEasyQuestion 800001

Question

The change in enthalpy ΔH is defined as:
  1. A
    Heat exchanged at constant pressure
    Correct
  2. B
    Heat exchanged at constant volume
  3. C
    Change in internal energy
  4. D
    Work done

Correct answer

Heat exchanged at constant pressure

Explanation

ΔH = Qp (heat at constant pressure). ΔU = Qv (heat at constant volume). Relation: ΔH = ΔU + ΔngRT where Δng = change in moles of gas.

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