Advertisements
Advertisements
Question
Industrially, ammonia is obtained by direct combination of nitrogen and hydrogen.
(i) Write balanced equation for the direct combination of nitrogen and hydrogen.
(ii) Which of the metals - iron, platinum, copper - catalyse this direct combination?
(iii) Is the formation of ammonia promoted by high pressure or low pressure?
Advertisements
Solution
(i) The reactants nitrogen and hydrogen combine to form ammonia at low temperature, high pressure in presence of catalyst to for maximum yield of ammonia . The balanced equation for the reaction is:
\[\ce{N2 + 3H2 <=> 2NH3 +heat}\]
(ii ) Iron acts as catalyst.
(iii ) Since the forward reaction occurs with decrease in volume, according to Le Chatelier's principle, high pressure favours the formation of ammonia.
Key: Haber's process
APPEARS IN
RELATED QUESTIONS
A gas ‘P’ gives dense white fumes with chlorine. Its aqueous solution gives a blue colour with copper (II) hydroxide (a) Name the gas P. (b) Give its formula (c) Give three uses of P.
Name the gas evolved in each of the following cases :
Ammonia reacts with heated copper oxide.
Name the following
Liquid when added to metallic nitride that yield ammonia.
Name the following
Products obtained by treating with excess chlorine.
Name the following
Basic gas that is used as a refrigerant.
Give balanced equation to prove that ammonia Has the element nitrogen in it.
How is ammonia dried and collected in the laboratory?
The catalyst used in the oxidation of ammonia is ______.
Ammonia burns in oxygen, as shown below.
\[\ce{4NH3 + 3O2 -> 2N2 + 6H2O}\]
If 240 cc of ammonia is burnt in 300 cc of oxygen, find out the composition of the resultant gaseous mixture at room temperature.
