Igcse Model Questions Vol1 2018 Chemistry Question 29
Practice objective / multiple choice question 29 from the 2018 Igcse Model Questions Vol1 Chemistry examination.
A sample of \(2.50\ \text{g}\) of potassium chlorate (\(\text{KClO}_{3}\)) is heated to decompose according to \[2\ \text{KClO}_{3} \rightarrow 2\ \text{KCl} + 3\ \text{O}_{2}.\] The oxygen gas is collected over water at \(25^{\circ}\text{C}\) and a total pressure of \(750\ \text{mmHg}\). The volume of gas collected is \(560\ \text{mL}\). The water vapour pressure at this temperature is \(23.8\ \text{mmHg}\). Calculate the percent yield of oxygen based on the amount of \(\text{KClO}_{3}\) used. Give your answer to one decimal place.
Answer Options
About This Question
This is Igcse Model Questions Vol1 2018 Chemistry Question 29. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.