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प्रश्न
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?
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उत्तर
(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
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संबंधित प्रश्न
State one relevant observation for the following
When ammonia gas is burnt in an atmosphere of excess oxygen.
Ammonia solution in water gives a blue precipitate when it combines with a solution of copper salt. The blue precipitate further dissolves in excess of an ammonia solution to give the azure blue solution. Explain with the equation.
Give balanced reactions for the following conversion:
Ammonia to nitrogen using an acidic gas.
Differentiate between:
Reaction of excess ammonia with chlorine and NH3 with excess chlorine
Write the equations for the following reactions, which result in the formation of ammonia:
(i) A mixture of ammonium chloride and slaked lime is heated.
(ii) Aluminium nitride and water.
Give a balanced chemical equation for the following:
Reaction of ammonia with excess of chlorine.
Ranjana wants to prove that ammonia is a reducing agent. To demonstrate this, she passes ammonia gas over heated copper oxide. What will she observe?
