Neco 2018 Chemistry Question 35
Practice objective / multiple choice question 35 from the 2018 Neco Chemistry examination.
In a laboratory, 2.50 g of calcium carbonate (CaCO_{3}, M = 100.09 g mol^{-1}) is reacted with excess HCl according to: CaCO_{3} + 2 HCl \rightarrow CaCl_{2} + H_{2}O + CO_{2}. The CO_{2} gas produced is collected over water at 25\degreeC and a total pressure of 750 mmHg. The vapor pressure of water at 25\degreeC is 23.8 mmHg. (a) Calculate the theoretical volume of dry CO_{2} (in mL) at STP (0\degreeC, 1 atm). (b) If the actual volume of dry CO_{2} collected at STP is 0.450 L, determine the percent yield of the reaction.
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About This Question
This is Neco 2018 Chemistry Question 35. It is one of the objective questions from the 2018 Neco Chemistry examination.
Difficulty level: Medium .
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