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neet CHEMISTRYEasy

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

1

ΔH=ΔUΔngRT\Delta H = \Delta U - \Delta n_g RT

2

ΔH=ΔU+ΔngRT\Delta H = \Delta U + \Delta n_g RT

3

ΔHΔU=ΔnRT\Delta H - \Delta U = -\Delta nRT

4

ΔH+ΔU=ΔnR\Delta H + \Delta U = \Delta nR

Step-by-Step Solution

The relationship between enthalpy change (ΔH\Delta H) and internal energy change (ΔU\Delta U) for a chemical reaction involving gases is given by the equation ΔH=ΔU+ΔngRT\Delta H = \Delta U + \Delta n_g RT, where Δng\Delta n_g is the change in the number of moles of gaseous products and reactants.

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