For which of the following reactions, ∆H is greater than ∆U ?

Chemistry · JEE Main · NTA Exams — Chemical Thermodynamics

1. N₂(g) + 3H₂(g)\(\text { ⟶ }\) 2NH₃(g)
2. CH₄(g) + 2O₂(g) \(\text { ⟶ }\) CO₂(g) + 2H₂O(l)
3. PCl₅(g) \(\text { → }\)PCl₃(g) + Cl₂(g)
4. HCl(aq) + NaOH(aq)\(\text { → }\)NaCl(aq) + H₂O(aq)

Answer

(C) PCl 5 (g) → PCl 3 (g) + Cl 2 (g)

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