| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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The Haber process is used to manufacture ammonia, which can be
used to produce nitrogen-based fertilisers. |
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The Haber process is used to manufacture what substance? |
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Some of the hydrogen and nitrogen reacts to form
ammonia. |
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Write a word equation for the Haber process? |
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The reaction is reversible so some of the ammonia
produced breaks down into nitrogen and hydrogen: nitrogen hydrogen --> <-- ammonia |
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Why does some of the ammonia produced through the Haber process break back down into nitrogen and hydrogen? |
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? explain how the commercially used conditions for the Haber process are related to the availability and cost of raw materials and energy supplies, control of equilibrium position and rate |
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Explain how the commercially used conditions for the Haber process are related to the availability and cost of raw materials? |
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On cooling, the ammonia liquefies and is removed. The remaining
hydrogen and nitrogen are recycled. |
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How is any ammonia created through the Haber process separated from any unreacted nitrogen and hydrogen? |
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MS 1a
Recognise and use
expressions in decimal form.
MS 1c
Use ratios, fractions and
percentages.
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Justify why the Haber process is carried out at 200 atmospheres? |
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? apply the principles of dynamic equilibrium in
Reversible reactions and dynamic equilibrium to the Haber process |
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Justify the use of a high temperature in the Haber process? |
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? explain the trade-off between rate of production and position of equilibrium |
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Suggest why a catalyst is used in the Haber process? |
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The raw materials for the Haber process are nitrogen and hydrogen |
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What are the raw materials required for the Haber process? |
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Students should be able to recall a source for the nitrogen and a source for the hydrogen used in the Haber process |
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What is commonly used as the source of nitrogen in the Haber process?
What is commonly used as the source of hydrogen in the Haber process? |
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The purified gases are passed over a catalyst of iron at a high
temperature (about 450?C) and a high pressure (about 200
atmospheres). |
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What conditions are used in the Haber process? |
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