Nitrogen

Which of the following are the properties of Nitrogen

• Colourless

• Reactive

• Odourless

• Diatomic

Nitrogen is obtained from liquid air when it is liquified at

• 200^oC

• -200^oC

• 100^oC

• -100^oC

Nitrogen is very unreactive due to its

• bonding

• state

• colour

Choose the chemicals above that can be used to prepare ammonia in the lab

• HCl

• NaCl

• Ca(OH)₂

• NH₄Cl

Ammonia is collected by

• downward delivery

• over water

• gas syringe

• upward delivery

A suitable drying agent to collect ammonia is

• concentrated sulfuric acid

• calcium oxide

• calcium chloride

• calcium sulfate

Choose the chemicals above that can be used to prepare ammonia in the industry

• Nitrogen

• Hydrogen

• Ca(OH)₂

• NH₄Cl

Conditions required to prepare ammonia in industry are

• 200atm

• 450 ^oC

• iron

• nitrogen

The following can be used to test for the presence of ammonia

• Hydrogen chloride

• litmus

• splint

• potassium dichromate

Nitrogen can be prepared in the lab when these react together

• ammonia

• zinc (II) oxide

• copper (II) oxide

• water