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AQA · GCSE · Chemistry · Higher

Ammonia recycling in Haber process

Q02.1 1 mark

In the Haber process ammonia is produced from nitrogen and hydrogen. Figure 1 represents the Haber process.

Figure 1
Figure 1

Figure 1

Enlarged question image

Figure 1

Pipe P links the condenser to the reactor. Why is the condenser linked to the reactor? Use Figure 1.

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Marking points

  1. 1 Explains that unreacted/remaining nitrogen and hydrogen are recycled or returned to the reactor.

Full-mark answer

Pipe P recycles the unreacted nitrogen and hydrogen from the condenser back into the reactor.

Why this answer loses marks

The pipe cools the ammonia so that it reacts again.

The condenser removes ammonia; the pipe is for returning unreacted nitrogen and hydrogen to the reactor.