Advertisements
Advertisements
Question
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
Advertisements
Solution
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitrate should not be heated very strongly, above 200°C because a higher temperature can cause following problems:
1. Nitric acid would decompose to form nitrogen dioxide.
2. Sodium sulphate is formed which may stick to the glass and cannot be removed easily.
3. The glass apparatus may break.
APPEARS IN
RELATED QUESTIONS
Write a balanced equation for the action of heat on a mixture of copper and concentrated nitric acid.
Ammonia is used in the Ostwald process.
Name the oxidising agent used in this process.
Name the Following:
Salt used in the laboratory to prepare nitric acid
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
What happen when (Given balanced equation):
Limestone reacts with nitric acid?
Complete and balance the following equation :
FeSO4 + NO + H2O → ______________
Choose the correct answer from the option given below:
The catalyst used in the manufacture of HNO3 by Ostwald process is
Name the product, catalyst and approximate temperature maintained in Ostwald's process. How is the temperature maintained in the Ostwald's process?
Write the balanced equation for the equation preparation of nitric acid from 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 |
