Neco Model Questions Vol1 2024 Chemistry Question 19

Practice objective / multiple choice question 19 from the 2024 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 19 NECO_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

A 2.00 g sample of an unknown hydrocarbon CₓHᵧ is combusted completely, producing 5.50 g of CO₂ and 2.20 g of H₂O.\n\n(a) Determine the empirical formula of the hydrocarbon.\n(b) Calculate the mass of O₂ required for the combustion of 1.00 g of this hydrocarbon.

Answer Options

A. Empirical formula C₂H₅; 2.85 g O₂ required for 1.00 g of the hydrocarbon.
B. Empirical formula CH; 4.00 g O₂ required for 1.00 g of the hydrocarbon.
C. Empirical formula CH₃; 3.00 g O₂ required for 1.00 g of the hydrocarbon.
Correct Answer D. Empirical formula CH₂; 3.42 g O₂ required for 1.00 g of the hydrocarbon.
Correct Answer
D
Correct Option:
Empirical formula CH₂; 3.42 g O₂ required for 1.00 g of the hydrocarbon.

About This Question

This is Neco Model Questions Vol1 2024 Chemistry Question 19. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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