Waec Model Questions Vol1 2017 Chemistry Question 3
Practice objective / multiple choice question 3 from the 2017 Waec Model Questions Vol1 Chemistry examination.
A 5.00 g sample of calcium carbonate is heated in a closed vessel, producing calcium oxide and carbon dioxide: CaCO₃ → CaO + CO₂. The CO₂ is collected over water at 25 °C and a total pressure of 760 mmHg. The water vapour pressure at 25 °C is 23.8 mmHg. If the volume of dry CO₂ collected is 1.20 L, calculate the percent yield of CO₂ based on the amount of CaCO₃ used. Give your answer to one decimal place.
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About This Question
This is Waec Model Questions Vol1 2017 Chemistry Question 3. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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