AP Chemistryhardmcq1 pt
Which gas is least likely to behave ideally?
A.H₂O(g) near its condensation point
B.He at 400 K and 0.5 atm
C.Ne at 300 K and 1 atm
D.H₂ at 500 K and 0.2 atm
Explanation
Core Concept
Water vapor near condensation experiences strong hydrogen-bonding attractions, so molecules stick together and pressure reads low — a large deviation from ideality.
Correct Answer
AH₂O(g) near its condensation point
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