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Which gas is expected to show the greatest departure from ideal-gas behavior?

1. N₂(g)
2. CH₄(g)
3. NH₃(g)
4. H₂(g)

Correct answer: NH₃(g)

Solution

Ammonia (NH₃) exhibits strong hydrogen bonding and has a relatively high molecular weight compared to the other gases listed, leading to significant intermolecular forces that cause it to deviate more from ideal gas behavior.

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