Fertillisers

Question 1

Industrial process to manufacture ammonia?

Answer 1

Haber process

Question 2

The process to convert ammonia into nitric acid?

Answer 2

Ostwald process

Question 3

Sources of fertilisers: natural fertilisers

Answer 3

Decay of dead plants and animals and the decay of plant and animal waste

Question 4

Sources of fertilisers: synthetic - harber process

Answer 4

making ammonia from nitrogen and hydrogen

Question 5

Sources of fertilisers: synthetic - Ostwald process

Answer 5

oxidising ammonia to make nitric acid

Question 6

Why can’t the temperature be moderate/low or high for the harber process?

Answer 6

If temperature is low the reaction is too slow, if it’s too high the ammonia decomposes

Question 7

Ideal pressure for harber process?

Answer 7

High - this increases the yield of ammonia

Question 8

What catalyst is used in the harber process?

Answer 8

Iron (Fe)

Question 9

Why is a condenser used in the harber process?

Answer 9

This cools the reaction down, turning ammonia into a liquid which is easier to extract.

Question 10

Recycled reactants used in harber process?

Answer 10

Unreacted nitrogen and hydrogen are returned to the reaction, saving money.

Question 11

3 elements found in essential nutrient compounds are:

Answer 11

• Nitrogen (N)
• Phosphorus (P)
• Potassium (k)