Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
Black copper oxide changes to reddish brown/pink copper.
APPEARS IN
संबंधित प्रश्न
Write balanced chemical equations for the following:
When the excess of ammonia is treated with chlorine.
The acid which is prepared by catalytic oxidation of ammonia.
State the conditions required for the given reaction to take place:
Catalytic oxidation of ammonia to nitric oxide.
Complete the following equation.
4 NH3 +5O2 →
What important process starts with the reaction in above? Name the catalyst used.
A gas ‘A’ reacts with another gas ‘B’ in the presence of a catalyst to give a colourless gas ‘C’. The gas ‘C’ when comes in contact with air produces a brown gas ‘D’. The solution of ‘A’ in water turns red litmus blue. Explain the observations.
Give balanced chemical equations for of the following :
Reaction of ammonia with excess chlorine.
Describe all what you will observe and write chemical equation, when limited amount of ammonia gas is passed through the following aqueous solution:
ZnCl2
Look at the following reaction :
A. Nitrogen + metal → compound X
B. X + water → ammonia + another compound
C. Ammonia + metal oxide → metal + water + N2
(i) One metal that can be used for reaction in A is magnesium.
(a) Write the formula of the compound X, that is formed.
(b) Write the balanced equation for reaction B, where Xis the compound formed.
( c) Which property of ammonia is demonstrated by reaction C?
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?
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.
