PG entrance exam CUET PG 2025 Mock Test Chemistry Thermodynamics Thermochemistry

For which of the following reactions, will ΔH be equal to ΔU?

1

H₂(g) = 1/2 O₂(g) → H₂O(l)

2

H₂(g) + I₂(g) → 2HI(g)

3

2NO₂(g) → N₂O₄(g)

4

2SO₃(g) → 2SO₂(g) + O₂(g)

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