Neco 2018 Chemistry Question 46

Practice objective / multiple choice question 46 from the 2018 Neco Chemistry examination.

Neco 2018 Chemistry Objective / Multiple Choice Medium Difficulty
Question 46 NECO • 2018 • CHEMISTRY • objective

A 30.0 g sample of an unknown saturated hydrocarbon (alkane) is completely combusted in excess oxygen. The combustion produces 44.8 L of \(\mathrm{CO_{2}}\) measured at STP. Assuming the hydrocarbon follows the formula \(\mathrm{C_{n}H_{2n+2}}\), determine the value of \(n\) and write the molecular formula of the hydrocarbon.

Answer Options

A. n = 3; molecular formula \\(\\mathrm{C_{3}H_{8}}\\)
B. n = 4; molecular formula \\(\\mathrm{C_{4}H_{10}}\\)
C. n = 1; molecular formula \\(\\mathrm{C_{1}H_{4}}\\)
Correct Answer D. n = 2; molecular formula \(\mathrm{C_{2}H_{6}}\)
Correct Answer
D
Correct Option:
n = 2; molecular formula \(\mathrm{C_{2}H_{6}}\)

About This Question

This is Neco 2018 Chemistry Question 46. It is one of the objective questions from the 2018 Neco Chemistry examination.

Difficulty level: Medium .

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