Match Column I (Relation) with Column II (Holds for) Column I Column II P) Δ H = Δ U + Δ n g RT i) Isochoric process, only PV work, any substance Q) q V = Δ U ii) Ideal gas undergoing any change of st

Question

Match Column I (Relation) with Column II (Holds for)

Column I	Column II
P) Δ H = Δ U + Δ n_g RT	i) Isochoric process, only PV work, any substance
Q) q_V = Δ U	ii) Ideal gas undergoing any change of state
R) Δ H = nC_P,mΔ T	iii) Adiabatic process, only PV work, any substance
S) w = Δ U	iv) Reaction with gaseous and condensed species at constant T

TestHub · Accepted Answer

Δ H = Δ U + Δ n g RT comes from the enthalpy definition applied to a reaction at constant temperature, neglecting condensed-phase volumes (P – iv). At constant volume no PV work is done, so q V = Δ U for any substance (Q – i). For an ideal gas H is a function of T alone, so Δ H = nC P,m Δ T for any change of state (R – ii). With q = 0 the first law gives w = Δ U (S – iii).

Chemistry - Thermodynamics - I Question with Solution | TestHub

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