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 a objective / multiple choice question from the 2017 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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