Gce Model Questions Vol1 2018 Chemistry Question 36
Practice objective / multiple choice question 36 from the 2018 Gce Model Questions Vol1 Chemistry examination.
A 2.00 g sample of a solid mixture contains only potassium carbonate (K₂CO₃) and sodium chloride (NaCl). When the sample is treated with excess hydrochloric acid, the carbon dioxide produced is collected over water at STP and its volume measured as 0.20 L. Assuming that only K₂CO₃ reacts to give CO₂ according to \(\mathrm{K_2CO_3 + 2HCl \rightarrow 2KCl + CO_2 + H_2O}\), calculate the mass percent of K₂CO₃ in the original sample.
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About This Question
This is Gce Model Questions Vol1 2018 Chemistry Question 36. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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