Question

Relation between dell H and dell U

Answer 1

Relation between ∆H &∆U:   Solids and liquids do not show significant change in the volume when heated. Thus if change in volume, ∆V is insignificant ∆H=∆U+P∆V∆H=∆U+P(0) ∆H=∆U The difference between the change in internal energy and enthalpy becomes significant when gases are involved in the reaction.