Neco 2020 Chemistry Question 39
Practice objective / multiple choice question 39 from the 2020 Neco Chemistry examination.
A mixture containing 5.00 g of \(\mathrm{CaCO_3}\) and 3.00 g of \(\mathrm{Na_2CO_3}\) is heated so that both carbonates decompose: \(\mathrm{CaCO_3}\rightarrow\mathrm{CaO}+\mathrm{CO_2}\) and \(\mathrm{Na_2CO_3}\rightarrow\mathrm{Na_2O}+\mathrm{CO_2}\). The dry \(\mathrm{CO_2}\) gas collected over water at 25\(^\circ\)C and 760 mmHg occupies 1.20 L. If 1.10 g of \(\mathrm{CaO}\) is actually recovered, calculate the percent yield of \(\mathrm{CaO}\) based on the original amount of \(\mathrm{CaCO_3}\). Give your answer to one decimal place.
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About This Question
This is Neco 2020 Chemistry Question 39. It is one of the objective questions from the 2020 Neco Chemistry examination.
Difficulty level: Medium .
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