Neco 2020 Chemistry Question 12
Practice objective / multiple choice question 12 from the 2020 Neco Chemistry examination.
A 5.00 g sample of a solid mixture containing calcium carbonate \(CaCO_{3}\) and sodium carbonate \(Na_{2}CO_{3}\) is strongly heated. The total mass of carbon dioxide gas collected over water is 2.10 g at 25 °C and 1 atm. Assuming complete decomposition of both carbonates, determine the mass percent of \(CaCO_{3}\) in the original mixture.
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About This Question
This is Neco 2020 Chemistry Question 12. It is one of the objective questions from the 2020 Neco Chemistry examination.
Difficulty level: Medium .
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