Neco 2021 Chemistry Question 25

Practice objective / multiple choice question 25 from the 2021 Neco Chemistry examination.

Neco 2021 Chemistry Objective / Multiple Choice Hard Difficulty
Question 25 NECO • 2021 • CHEMISTRY • objective
Neco 2021 Chemistry Question 25 diagram

A 0.500 g sample of a compound containing only carbon, hydrogen and sulfur is combusted completely. The combustion produces 1.00 g of \(\mathrm{CO_{2}}\) and 0.410 g of \(\mathrm{H_{2}O}\). (a) Determine the empirical formula of the compound. (b) If the molar mass of the compound is approximately 176 g·mol\(^{-1}\), determine its molecular formula.

Answer Options

A. Empirical formula: C4H8S; Molecular formula: C12H24S3.
B. Empirical formula: C5H10S; Molecular formula: C10H20S2.
Correct Answer C. Empirical formula: C4H8S; Molecular formula: C8H16S2.
D. Empirical formula: C3H6S; Molecular formula: C6H12S2.
Correct Answer
C
Correct Option:
Empirical formula: C4H8S; Molecular formula: C8H16S2.

About This Question

This is Neco 2021 Chemistry Question 25. It is one of the objective questions from the 2021 Neco Chemistry examination.

Difficulty level: Hard .

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