Neco 2022 Chemistry Question 50
Practice objective / multiple choice question 50 from the 2022 Neco Chemistry examination.
A 10.0\,g sample of impure calcium carbonate contains 20\,\% inert material. The pure CaCO\(_3\) is heated: \(\text{CaCO}_{3} \rightarrow \text{CaO} + \text{CO}_{2}\). The evolved CO\(_2\) is absorbed by excess aqueous NaOH according to \(\text{CO}_{2} + 2\text{NaOH} \rightarrow \text{Na}_{2}\text{CO}_{3} + \text{H}_{2}\text{O}\). Calculate the mass of sodium carbonate formed.
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About This Question
This is Neco 2022 Chemistry Question 50. It is one of the objective questions from the 2022 Neco Chemistry examination.
Difficulty level: Medium .
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