Gce Model Questions Vol1 2017 Chemistry Question 5

Practice essay / theory question 5 from the 2017 Gce Model Questions Vol1 Chemistry examination. This question covers Stoichiometry, Limiting reagent, Gas laws, Percent yield .

Gce Model Questions Vol1 2017 Chemistry Essay / Theory

Topics: Stoichiometry Limiting reagent Gas laws Percent yield

Question 5 GCE_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • essay

A mixture containing 5.00 g of calcium carbonate (CaCO₃) and 3.00 g of hydrochloric acid (HCl) is allowed to react completely according to the equation: CaCO₃(s) + 2 HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g) The carbon dioxide gas produced is collected over water at 0 °C and 1.00 atm pressure. The volume of gas measured is 0.45 L. (The vapour pressure of water at 0 °C is 0.006 atm.) Answer the following questions:

Question Parts

( a )

Identify the limiting reagent and show the calculations used to reach your conclusion.

( b )

Calculate the theoretical volume of CO₂ (at STP) that could be obtained from the reaction.

( c )

Determine the percent yield of CO₂ based on the measured volume of 0.45 L (corrected for water vapour).

( d )

Calculate the mass of calcium carbonate that remains unreacted after the reaction is complete.

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About This Question

This is Gce Model Questions Vol1 2017 Chemistry Question 5. It is one of the essay questions from the 2017 Gce Model Questions Vol1 Chemistry examination.

The question covers Stoichiometry, Limiting reagent, Gas laws, Percent yield .

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