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ChemistryNEET 2023First law, enthalpy and Hess's law

Thermodynamics

Which amongst the following options is the correct relation between the change in enthalpy and the change in internal energy?

  1. A.ΔH=ΔU−ΔngRT\Delta H = \Delta U - \Delta n_g RT
  2. B.ΔH=ΔU+ΔngRT\Delta H = \Delta U + \Delta n_g RT✓
  3. C.ΔH−ΔU=−ΔnRT\Delta H - \Delta U = -\Delta n RT
  4. D.ΔH+ΔU=ΔnR\Delta H + \Delta U = \Delta nR

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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From Chemistry › Thermodynamics › First law, enthalpy and Hess's law — lectures, notes and every past question on it.

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