Waec Model Questions Vol1 2017 Chemistry Question 4

Practice essay / theory question 4 from the 2017 Waec Model Questions Vol1 Chemistry examination. This question covers Mole Concept .

Waec Model Questions Vol1 2017 Chemistry Essay / Theory

Topic: Mole Concept

Question 4 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • essay

Calcium carbonate reacts with hydrochloric acid according to the equation: CaCO₃ + 2 HCl → CaCl₂ + CO₂ + H₂O. In a laboratory experiment, 5.0 g of CaCO₃ is mixed with 3.0 g of HCl. Answer the following questions:

Question Parts

( a )

Calculate the number of moles of CaCO₃ used in the experiment.

( b )

From the amount of CaCO₃ calculated in part (a), determine the mass of CO₂ that can be produced.

( c )

Identify the limiting reagent and calculate the theoretical mass of CaCl₂ that can be formed.

( d )

If the actual mass of CaCl₂ obtained after the reaction is 4.0 g, calculate the percent yield.

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About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 4. It is one of the essay questions from the 2017 Waec Model Questions Vol1 Chemistry examination.

The question covers Mole Concept .

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