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For ideal solution, ΔHmixing = 0 and ΔHmixing = 0.

1. ΔHmixing = 0
2. ΔHmixing = 0
3. ΔHmixing = 0
4. ΔHmixing = 0

Correct answer: ΔHmixing = 0

Solution

In an ideal solution, both the enthalpy change (ΔHmixing) and volume change (ΔVmixing) upon mixing are zero because the intermolecular forces between like and unlike molecules are identical.

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