Mention the conditions required to maximise the yield of ammonia.
Ammonia is prepared using the Haber’s process.
The conditions required to maximize the yield of ammonia are as follows:
1 In accordance to Le Chatelier’s principle ,low temperature will shift the equilibrium to the right because the reaction is exothermic.This gives greater yield of ammonia.Therefore a temperature of about 450°C will be optimal for the preparation of ammonia.
2 High pressure on the reaction at equilibrium favours the shift of the equilibrium to the right because the forward reaction proceeds with a decrease in number of moles.Hence a pressure of about 200 atm will be optimal for the higher yield of ammonia.
3 A catalyst should be used to increase the rate of reaction & to quickly attain equilibrium.For eg as iron oxide mixed with small amounts of K2O and Al2O3 can be used as catalyst.
4 N2 & H2 gases should be pure in nature to increase the yield of ammonia.
The reaction between A and B is first order with respect to A and zero order with respect to B. Fill in the blanks in the following table:
| Experiment |
A/ mol L - 1 |
B/ mol L - 1 |
Initial rate/mol L - 1 min - 1 |
| I | 0.1 | 0.1 |
2.0 × 10 - 2 |
| II | -- | 0.2 |
4.0 × 10 - 2 |
| III | 0.4 | 0.4 | -- |
| IV | -- | 0.2 |
2.0 × 10 - 2 |
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Ammonia is prepared using the Haber’s process.
The conditions required to maximize the yield of ammonia are as follows:
1 In accordance to Le Chatelier’s principle ,low temperature will shift the...
Step-by-step explanation:
• Ammonia is prepared using the Haber’s process
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Students often lose marks by skipping steps, writing incomplete explanations, or misunderstanding keywords used in the question.
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It should be like 273-278K
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