Two compounds A and B were being tested for their boiling points. It was observed that A started boiling after B, when both were subjected to same conditions. If the compound B is acetone, which of the following can be compound A?(a) n-Butane(b) Methoxyethane(c) Propanal(d) PropanolThis question was addressed to me during an interview for a job.My doubt is from Aldehydes and Ketones Physical Properties in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12

Two compounds A and B were being tested for their boiling points. It w

1.	Two compounds A and B were being tested for their boiling points. It was observed that A started boiling after B, when both were subjected to same conditions. If the compound B is acetone, which of the following can be compound A?(a) n-Butane(b) Methoxyethane(c) Propanal(d) PropanolThis question was addressed to me during an interview for a job.My doubt is from Aldehydes and Ketones Physical Properties in portion Aldehydes, Ketones and Carboxylic Acids of Chemistry – Class 12
Answer» The correct answer is (d) Propanol The best I can explain: It can be inferred that B has a higher boiling point than A. Since hydrocarbons, ethers and aldehydes have LOWER boiling points than ketones of similar molecular MASSES, NONE of them can be COMPOUND A. Also, ALCOHOLS have a higher boiling point than similar ketones hence, the compound A is propanol.

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