In the laboratory, temperatures above 200°C are not used in general because:
Fuel is wasted
The glass apparatus may tend to break
The product formed sticks to the glass and difficult to remove.
None of the above
Temperatures above 200°C are not used as:
In laboratory method of preparation,temperature is maintained 2000C because,
In the laboratory preparation of nitric acid, it can be obtained below 200∘C or above 200∘C, but the lower temperature is preferred. Which of the following reason(s) is /are correct?
i. The glass apparatus may break at a higher temperature.
ii. At lower temperature, potassium or sodium sulphate is formed, which cannot be easily removed from the apparatus.
Sulphuric acid is not reacted with sodium chloride above a temperature of 200 degrees celcius as the glass apparatus gets damaged due to :