Neco Model Questions Vol1 2020 Chemistry Question 6

Practice objective / multiple choice question 6 from the 2020 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2020 Chemistry Objective / Multiple Choice Hard Difficulty
Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2020 • CHEMISTRY • objective

A 1.76 g sample of an unknown monohydric alcohol with molecular formula \(C_nH_{2n+2}O\) reacts with excess sodium metal, liberating \(0.224\) L of hydrogen gas at STP. When the same alcohol is oxidised with pyridinium chlorochromate (PCC), it yields a single ketone whose molar mass is \(86\ \text{g mol}^{-1}\). Determine the value of \(n\) and identify the structure of the alcohol (specify whether it is primary, secondary or tertiary).

Answer Options

A. n = 5; tertiary alcohol (2‑pentanol)
Correct Answer B. n = 5; secondary alcohol (2‑pentanol)
C. n = 4; primary alcohol (1‑butanol)
D. n = 6; tertiary alcohol (2‑hexanol)
Correct Answer
B
Correct Option:
n = 5; secondary alcohol (2‑pentanol)

About This Question

This is Neco Model Questions Vol1 2020 Chemistry Question 6. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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