Long answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A compound has molecular formula , gives a positive 2,4-DNP test, but does not reduce Tollens' reagent. It has a straight carbon chain. Identify and write its IUPAC name.
Total: 3 marks
(a) Use the test results to identify the functional group. (1 mark)
(b) Use the formula and straight-chain condition to identify the structure. (1 mark)
(c) Write the IUPAC name. (1 mark)
Something wrong with this item?