Neco Model Questions Vol1 2019 Chemistry Question 35

Practice objective / multiple choice question 35 from the 2019 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2019 Chemistry Objective / Multiple Choice Hard Difficulty
Question 35 NECO_MODEL_QUESTIONS_VOL1 • 2019 • CHEMISTRY • objective

A 1.00 g sample of an unknown alcohol is completely combusted, producing 0.0500 mol of CO\(_2\) and 0.0667 mol of H\(_2\)O. (a) Determine the molecular formula and molar mass of the alcohol. (b) Write the balanced equation for its oxidation by acidic potassium dichromate to the corresponding aldehyde.

Answer Options

A. Molecular formula C3H6O; molar mass ≈ 58.1 g·mol⁻¹; oxidation: C3H6O → C3H4O + H2O
Correct Answer B. Molecular formula C3H8O; molar mass ≈ 60.1 g·mol⁻¹; oxidation: C3H8O → C3H6O + H2O
C. Molecular formula C2H6O; molar mass ≈ 46.1 g·mol⁻¹; oxidation: C2H6O → C2H4O + H2O
D. Molecular formula C4H10O; molar mass ≈ 74.1 g·mol⁻¹; oxidation: C4H10O → C4H8O + H2O
Correct Answer
B
Correct Option:
Molecular formula C3H8O; molar mass ≈ 60.1 g·mol⁻¹; oxidation: C3H8O → C3H6O + H2O

About This Question

This is Neco Model Questions Vol1 2019 Chemistry Question 35. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Hard .

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