Gce Model Questions Vol1 2019 Chemistry Question 44
Practice objective / multiple choice question 44 from the 2019 Gce Model Questions Vol1 Chemistry examination.
A student reacts \(2.00\ \text{g}\) of magnesium metal with excess hydrochloric acid. The hydrogen gas produced is collected over water at \(298\ \text{K}\) and a total pressure of \(760\ \text{mmHg}\). The measured volume of gas is \(0.450\ \text{dm}^{3}\) and the vapour pressure of water at \(298\ \text{K}\) is \(23.8\ \text{mmHg}\). Determine the percent yield of hydrogen based on the amount of magnesium used. (Take \(R = 0.0821\ \text{L·atm·mol}^{-1}\text{K}^{-1}\).)
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About This Question
This is Gce Model Questions Vol1 2019 Chemistry Question 44. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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