Waec Model Questions Vol1 2025 Chemistry Question 12
Practice objective / multiple choice question 12 from the 2025 Waec Model Questions Vol1 Chemistry examination.
When 12.0 g of potassium chlorate (KClO₃) is thermally decomposed according to 2 KClO₃(s) → 2 KCl(s) + 3 O₂(g), the oxygen gas is collected over water at 25 °C and a total pressure of 750 mm Hg. The vapor pressure of water at this temperature is 23.8 mm Hg, and the volume of dry O₂ collected is 3.20 L. Calculate the percent yield of O₂ based on the theoretical yield.
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About This Question
This is Waec Model Questions Vol1 2025 Chemistry Question 12. It is a objective / multiple choice question from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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