Neco Model Questions Vol1 2018 Chemistry Question 2
Practice objective / multiple choice question 2 from the 2018 Neco Model Questions Vol1 Chemistry examination.
A saturated solution of Na\(_2\)CO\(_3\) at 20°C contains 215 g of Na\(_2\)CO\(_3\) per 1000 g of water. 300 g of this solution is prepared and then 50.0 g of K\(_2\)CO\(_3\) (solubility 112 g per 1000 g water at 20°C, 140 g per 1000 g water at 80°C) is added. The mixture is heated to 80°C, where the solubility of Na\(_2\)CO\(_3\) is 90 g per 1000 g water. Assuming no change in water mass on mixing, how many grams of Na\(_2\)CO\(_3\) will precipitate on heating?
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About This Question
This is Neco Model Questions Vol1 2018 Chemistry Question 2. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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