Neco 2018 Chemistry Question 22
Practice objective / multiple choice question 22 from the 2018 Neco Chemistry examination.
A 5.00 g sample of a solid mixture contains 40\% by mass of calcium chloride (\(\mathrm{CaCl_2}\)) and the remainder sodium chloride (\(\mathrm{NaCl}\)). The mixture is treated with excess sodium carbonate to precipitate calcium carbonate, which is then filtered, dried and heated to calcium oxide. If \(0.85\) g of \(\mathrm{CaO}\) is obtained, calculate the percent yield of \(\mathrm{CaO}\).
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About This Question
This is Neco 2018 Chemistry Question 22. It is one of the objective questions from the 2018 Neco Chemistry examination.
Difficulty level: Medium .
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