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As all reactant and product are liquid Δn(g) = 0 ΔH = ΔE − ΔnRT ΔH = ΔE

1. (a) ΔH = ΔE
2. (b) ΔH = ΔE − ΔnRT
3. (c) ΔH = ΔE + ΔnRT
4. (d) ΔH = ΔE − ΔnRT

Correct answer: (a) ΔH = ΔE

Solution

Since all reactants and products are liquids, there is no change in the number of moles of gas (Δn = 0). Therefore, the term ΔnRT becomes zero, and ΔH equals ΔE.

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