Waec Model Questions Vol1 2024 Chemistry Question 5

Practice objective / multiple choice question 5 from the 2024 Waec Model Questions Vol1 Chemistry examination.

Waec Model Questions Vol1 2024 Chemistry Objective / Multiple Choice Medium Difficulty
Question 5 WAEC_MODEL_QUESTIONS_VOL1 • 2024 • CHEMISTRY • objective

Calcium carbonate decomposes on heating according to CaCO₃(s) → CaO(s) + CO₂(g). If 10.0 g of CaCO₃ are heated, (a) calculate the theoretical volume of CO₂ produced at 25 °C and 1 atm, and (b) determine the percent yield if 1.9 L of CO₂ are actually collected.

Answer Options

A. (a) 2.30 L CO₂ (theoretical) (b) 68 % yield
B. (a) 2.20 L CO₂ (theoretical) (b) 70 % yield
Correct Answer C. (a) 2.44 L CO₂ (theoretical) (b) 78 % yield
D. (a) 2.60 L CO₂ (theoretical) (b) 85 % yield
Correct Answer
C
Correct Option:
(a) 2.44 L CO₂ (theoretical) (b) 78 % yield

About This Question

This is Waec Model Questions Vol1 2024 Chemistry Question 5. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

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