Chemistry - CHEMICAL BONDING Question with Solution | TestHub

ChemistryCHEMICAL BONDINGHydrogen BondingHard2 minQB
ChemistryHardmultiple choice

The figure shows ortho- and para-hydroxyacetophenone; the ortho isomer can form a six-membered intramolecular O–H···O=C arrangement. Use these supplied normal boiling-point data: ortho=213°C, para=295°C; Ne=27K, Ar=87K, Kr=120K; CF₄=145K, C₂F₆=195K. Which proposed increasing orders are INCORRECT?

Options:(select one or more)

Answer:
A, C
Solution:

The stated isomer data give ortho<para. Internal hydrogen bonding in the ortho isomer can reduce intermolecular association; merely counting OH groups would miss that structural distinction. The noble-gas data increase Ne→Kr, and the fluorocarbon data give CF₄<C₂F₆. Thus A and C reverse their respective measured orders, while B and D are consistent.

Stream:JEESubject:ChemistryTopic:CHEMICAL BONDINGSubtopic:Hydrogen Bonding
⏱ 2mℹ️ Source: QB

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