The difference between Delta H and Delta U is | vedclass

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(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U + \De

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only gases

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(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U + \Delta (PV)$.For ideal gases,this can be written as $\Delta H = \Delta U + \Delta n_g RT$,where $\Delta n_g$ is the change in the number of moles of gaseous species.In solids and liquids,the change in volume $(\Delta V)$ is very small,making the term $P\Delta V$ negligible.However,for systems consisting of gases,the change in volume is significant,making the difference between $\Delta H$ and $\Delta U$ substantial.Therefore,the difference is significant for systems consisting of only gases.

The difference between $\Delta H$ and $\Delta U$ is usually significant for systems consisting of:

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