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Hydrogen Bonding Practice Test

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Q1

Which of the following contain(s) intramolecular hydrogen bonding?

I. NH3

II. HF

III. HCOH

IV. CH3CH2CH2OH

A pure sample of an unknown substance is subjected to a series of tests to determine its identity. It is found to have a significantly higher boiling point than a sample of another substance that is approximately the same molecular weight and has a very similar atomic composition.

Which of the following would best account for this difference?

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