Igcse Model Questions Vol1 2018 Chemistry Question 27
Practice objective / multiple choice question 27 from the 2018 Igcse Model Questions Vol1 Chemistry examination.
The apparatus shown collects hydrogen gas over water from the reaction of excess hydrochloric acid with magnesium metal. The graduated cylinder reads \(112.0\ \text{mL}\) of gas at a temperature of \(298\ \text{K}\) and a total pressure of \(750\ \text{mmHg}\). The water vapour pressure at this temperature is \(23.8\ \text{mmHg}\). Using the reaction \(\text{Mg} + 2\text{HCl} \rightarrow \text{MgCl}_{2} + \text{H}_{2}\), determine the mass of magnesium that reacted. Give your answer in grams to three significant figures.
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About This Question
This is Igcse Model Questions Vol1 2018 Chemistry Question 27. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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