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 one of the objective questions from the 2025 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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