Neco Model Questions Vol1 2022 Chemistry Question 42
Practice objective / multiple choice question 42 from the 2022 Neco Model Questions Vol1 Chemistry examination.
A 5.00 g sample of an unknown aliphatic diol (containing only C, H and O) is oxidised with excess acidic potassium dichromate. Under the reaction conditions only the primary hydroxyl group is oxidised to a carboxyl group, while the secondary hydroxyl group remains unchanged, giving a monocarboxylic acid. The isolated product weighs 5.92 g. Assuming quantitative reaction and no side‑products, determine the molecular formula of the original diol.
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This is Neco Model Questions Vol1 2022 Chemistry Question 42. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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