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Chemistry

6.11 - The Haber Process

5 min

All 3 sections match your courseOCR B Foundation Triple

Intro & the reaction

Choosing the conditions

note 1 of 1

Making ammonia in the Haber process

Ammonia (NH₃) is manufactured by the Haber process, and is used mainly to make fertilisers.

The reaction

Nitrogen and hydrogen react reversibly to make ammonia:

N₂(g) + 3H₂(g) ⇌ 2NH₃(g)

Sources of the raw materials

Nitrogen - Extracted from the air (which is about 78% nitrogen).
Hydrogen - Obtained from natural gas (by reacting methane with steam).

Common mistake

Using a standard arrow (→) instead of the reversible reaction symbol (⇌) when writing the chemical equation for the Haber process. You must use the reversible symbol to earn the mark, as it shows the ammonia can break back down into nitrogen and hydrogen.

key terms

TermDefinition

Haber processThe industrial process used to manufacture ammonia from nitrogen and hydrogen.

end of notes

Key points to remember

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6.12 - Atom EconomyNext up

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