Loading subjects
Spectroscopy · Part 2 of 4
3 exam-style questions with model answers, plus 4 quick multi-choice questions — every question on this part of the standard, grouped by the 1 page of notes they come from.
Write a full answer before you reveal the model one. That comparison is where the learning happens.
State the characteristic infrared absorptions used to identify an alcohol, a carboxylic acid, an amine and a ketone.
Explain how infrared spectroscopy distinguishes an alcohol from a carboxylic acid, and why the absence of an absorption is as useful as its presence.
Four compounds all show a strong C=O absorption. Justify how their exact carbonyl positions and other absorptions distinguish an aldehyde, a ketone, an ester and an amide, and evaluate how reliable the carbonyl position alone is as evidence.