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प्रश्न
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.
उत्तर
As the 'A' turns red litmus blue, it is a base. Now the gas 'A' combines with 'B' in the presence of a catalyst to give colourless gas Nitrogen monoxide. It reacts with oxygen to give brown gas, which is Nitrogen dioxide.
A = \[\ce{NH3}\]
B = \[\ce{O2}\]
C = \[\ce{NO}\]
D = \[\ce{NO2}\]
Catalyst = \[\ce{Pt}\]
Reactions:
With air \[\ce{NO}\] forms → \[\ce{NO2}\] [Brown gas] - gas 'D'
\[\ce{4NH3 + 5O2 ->[Pt 800°C] 4NO↑ + 6H2O + Heat}\]
\[\ce{2NO + O2 -> \underset{(Brown gas)}{2NO2}}\]
\[\ce{NH3}\] in water forms \[\ce{NH4OH}\] which turns red litmus blue.
\[\ce{NH3 + H2O -> NH4OH}\]
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संबंधित प्रश्न
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
Identify the substance underlined:
The catalyst used to oxide ammonia.
Name the following
Salt known as ammoniac.
Write balanced chemical equation for the following:
When excess of ammonia is treated with chlorine.
Give balanced chemical equations for each of the following:
Lab preparation of ammonia using an ammonium salt
Differentiate between:
Reaction of excess ammonia with chlorine and NH3 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:
FeCl3
A compound which undergoes thermal dissociation.
