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प्रश्न
Name the compounds required for the laboratory preparation of nitric acid.
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उत्तर
For laboratory preparation of nitric acid potassium nitrate or sodium nitrate and conc. sulphuric acid is required.
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संबंधित प्रश्न
Name a metal nitrate which on heating is changed into metal.
Explain with the help of a balanced equation the brown ring test for nitric acid.
The action of heat on the blue crystalline solid X gives a reddish brown gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.
- Identify X, Y and Z.
- Write the equation for the action of heat on X.
- Write the equation between solution X and gas Z.
Why is the temperature maintained at 200°C in the above reaction?
Give reason for the following:
Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
Write the balanced equation for the equation preparation of nitric acid from potassium nitrate.
Give the name of a soluble lead salt and write the eqution for the action of heat on this salt. Write the equation for the preparation of nitric acid from potassium nitrate.
Describe what you see when concentrated nitric acid is added to copper.
Account for the yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle.
Explain the following :
An all glass apparatus is used in the laboratory preparation of nitric acid.
