Waec Model Questions Vol1 2018 Chemistry Question 12

Practice objective / multiple choice question 12 from the 2018 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2018 Chemistry Objective / Multiple Choice Medium Difficulty
Question 12 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • objective

A hydrocarbon has a molecular mass of 114 g mol⁻¹ and its molecular formula follows that of an alkane (CₙH₂ₙ₊₂). (a) Determine the value of n and write the molecular formula. (b) Write the balanced equation for its complete combustion in oxygen. (c) If the standard enthalpy of combustion is -6580 kJ mol⁻¹, calculate the heat released per gram of the hydrocarbon.

Answer Options

Correct Answer A. 57.7
B. 48.3
C. 52.1
D. 65.8
Correct Answer
A
Correct Option:
57.7

About This Question

This is Waec Model Questions Vol1 2018 Chemistry Question 12. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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