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प्रश्न
In the preparation of nitric acid from KNO3 concentrated sulphuric acid is used in place of hydrochloric acid. Why?
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उत्तर
Concentrated sulphuric acid is used in place of hydrochloric acid because hydrochloric acid is a volatile acid. If used, the nitric acid vapours will carry HCl vapours along with them, making it impossible to get pure nitric acid. Therefore, a non-volatile acid like concentrated sulphuric acid is required.
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संबंधित प्रश्न
State one relevant observation for the following:
When crystals of copper nitrate are heated in a test tube.
What is : aqua regia
Give reason why concentrated nitric acid prepared in the laboratory is yellow in colour. State how the colour of the acid is removed.
Write a balanced equation and name the products formed when concentrated nitric acid is heated.
Choose the correct word from the given options to complete the sentence :
Sulphur can be converted to sulphuric acid using __________ nitric acid.
Write equation to show the reaction between the following:
Copper oxide and dilute nitric acid.
Fill in the blank using the appropriate words given below:
Hot, concentrated nitric add reacts with sulphur to form ______.
Write a balanced equation for following :
Action of cold and dilute nitric acid on copper
Write a balanced equation for following :
Action of conc. Nitric acid on sulphur
Write sqauential observation for effect of heat on Copper nitrate.
