Question

(a) Name two oxoacids of sulphur.
(b) (i) How will you manufacture ammonia by Haber process?
(ii) Write any two uses of inert gases.

Answer 1

i) Oxoacids of sulfur are:

• Sulfurous acid $H_{2}S{O}_3$
  
• Sulfuric acid $H_{2}S{O}_4$
  

b) i) Ammonia is manufactured using Haber's process by taking $N_2,H_2$ in $1:3$ proportions. Both are reacted in a tank in presence of $Fe,Mo$ which are catalyst and promoter respectively.

$N_2+3H_2\to 2N{H}_3$

ii) Helium is much less dense (lighter) than air and is used in balloons and blimps. Because of its inertness, it doesn’t burn in air unlike hydrogen which was formally used in large balloons

Neon is used in the familiar ‘neon sign” used in advertisement.

Argon, like all the noble gases is chemically inert. It is used in filament bulbs because the metal filament will not burn in argon