Advertisements
Advertisements
Question
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
Advertisements
Solution
At high temperature, nitric acid decomposes and the glass apparatus may get damaged. Sodium formed at a higher temperature forms a hard crust which sticks to the walls of the retort.
APPEARS IN
RELATED QUESTIONS
Write a balanced chemical equation for the following:
Action of cold and dilute Nitric acid on Copper
Describe the Ostwald's process for the manufacture of nitric acid with labeled diagram.
Write balanced equation and name the product formed when :
Concentrated nitric acid is heated.
What do you observe when?
Conc. HNO3 drops on the skin of a person?
What happen when (Given balanced equation):
Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?
Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Copy and complete the following table relating to important industrial processes output refers to the product of the process not the intermediate steps.
| Name of process | Inputs | Catalyst | Equation for catalysed reaction | Output |
| Haber process | Hydrogen + | |||
|
Ammonia + |
Nitric acid |
Identify the gas evolved when sulphur is treated with concentrated nitric acid.
