Waec Model Questions Vol1 2017 Chemistry Question 16
Practice objective / multiple choice question 16 from the 2017 Waec Model Questions Vol1 Chemistry examination.
In the laboratory set‑up shown, zinc metal reacts with excess hydrochloric acid to produce hydrogen gas collected over water. The inverted graduated cylinder reads a volume of 125.0 mL of gas at 25 °C. Atmospheric pressure is 760 mmHg and the water vapour pressure at this temperature is 23.8 mmHg. A mass of 0.500 g of zinc was used. Calculate the percent yield of hydrogen gas based on the theoretical amount that could be produced from the zinc.
Answer Options
About This Question
This is Waec Model Questions Vol1 2017 Chemistry Question 16. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
Master the Exam!
You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.