Chapter 30: Haber Process and NPK Fertilisers

Ammonia

________ is an important industrial product used to make fertilisers, explosives and dyes.

Fertilisers

________ provide mineral ions needed for healthy growth in plants.

Nitrogen

________ (extracted from the air) and hydrogen (obtained from natural gas) are pumped through pipes.

mineral ions

As plants grow, they absorb ________ from the water in the soil through their root hair cells.

Ammonium ions

________, NH4+, and nitrate ions, NO3,- are sources of soluble nitrogen.

Fertilisers

________ are formulations which may contain nitrogen, phosphorus and potassium compounds to promote plant growth.

Fertilisers

________ that supply all three elements are often called NPK ________, after the chemical symbols for these three elements.

phosphorus

the chemical element of atomic number 15, a poisonous, combustible non-metal which exists in two common allotropic forms, white phosphorus, a yellowish waxy solid which ignites spontaneously in air and glows in the dark, and red phosphorus, a less reactive form used in making matches.

nitrogen

the chemical element of atomic number 7, a colourless, odourless unreactive gas that forms about 78 per cent of the earth's atmosphere. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant.

ammonia

a colourless gas with a characteristic pungent smell, which dissolves in water to give a strongly alkaline solution.

potassium meaning

the chemical element of atomic number 19, a soft silvery-white reactive metal of the alkali metal group.

reversible

reaction is_so theres a compromise to be made

haber process right side

ammonia and heat

Haber process left side

nitrogen and hydrogen

NPK stand for

nitrogen, potassium and phosphorus

Dynamic equilibrium

_______is when the forward and reverse processes occur at the same rate, resulting in no observable change in the system.