Gce Model Questions Vol1 2019 Chemistry Question 5

Practice essay / theory question 5 from the 2019 Gce Model Questions Vol1 Chemistry examination. This question covers Stoichiometry .

Gce Model Questions Vol1 2019 Chemistry Essay / Theory

Topic: Stoichiometry

Question 5 GCE_MODEL_QUESTIONS_VOL1 • 2019 • CHEMISTRY • essay

A chemical plant produces ammonia (NH₃) by the Haber process using nitrogen gas (N₂) and hydrogen gas (H₂). The balanced equation is: N₂(g) + 3 H₂(g) → 2 NH₃(g) The plant initially charges a reactor with 140 g of N₂ and an excess of H₂. The student is required to:

Question Parts

( a )

Calculate the theoretical mass of NH₃ that could be obtained from the 140 g of N₂.

( b )

If the actual mass of NH₃ recovered after the reaction is 150 g, determine the percent yield of the process.

( c )

The plant now wishes to produce 500 g of NH₃ with an expected overall yield of 85 %. Calculate the mass of N₂ that must be initially charged (assume H₂ is in large excess).

( d )

Discuss at least three practical factors that can affect the yield of NH₃ in the industrial Haber process.

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About This Question

This is Gce Model Questions Vol1 2019 Chemistry Question 5. It is one of the essay questions from the 2019 Gce Model Questions Vol1 Chemistry examination.

The question covers Stoichiometry .

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