Advertisements
Advertisements
प्रश्न
How is nitric acid prepared in a laboratory?
Describe the laboratory preparation of nitric acid.
Advertisements
उत्तर
In the laboratory, nitric acid is prepared by heating a mixture of Potassium nitrate (KNO3) or Sodium nitrate (NaNO3) with concentrated Sulphuric acid (H2SO4) below 200°C in an all-glass apparatus.
\[\ce{KNO3 + H2SO4 (conc.) ->[< 200°C] KHSO4 + HNO3}\]
संबंधित प्रश्न
How will you prepare the following from nitric acid?
Magnesium nitrate
Why is freshly prepared ferrous sulphate solution used for testing the nitrate radical in the brown ring test?
How can 68% nitric acid be concentrated to 98% nitric acid?
Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
Give reason for the following:
Aluminum does not react with nitric acid of any concentration.
Write balanced equation and name the product formed when :
Cupric oxide reacts with nitric acid.
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Name (formula is not acceptable) the gas produced in the following reaction:
By the action of concentrated nitric acid on copper.
Write a balanced equation for following :
Reaction of ammonia with nitric acid
X, Y and Z are three crystalline solids that are soluble in water and have a common anion.
To help you to identify X, Y and Z, you are provided with the following experimental observations. Copy and complete the corresponding inferences in (a) to (e).
- A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turning added to the mixture.
INFERENCE 1: The common anion is the ______ ion. - When X is heated, it melts and gives off only one gas which re-lights a glowing splint.
INFERENCE 2: The cation in X is either ______ or ______. - The action of heat on Y produces a reddish-brown gas and yellow residue which fuses with a glass of the test tube.
INFERENCE 3: The metal ion present in Y is the ______ ion. - When Z is heated, it leaves no residue. Warming Z with sodium hydroxide solution liberates a gas which turns moist red litmus paper blue.
INFERENCE 4: Z contains the ______ cation. - Write the equations for the following reactions:
- X and concentrated sulphuric acid (below 200°C). (One equation only for either of the cations given in INFERENCE 2)
- The action of heat on Y.
- Concentrated nitric acid is added to copper turnings kept in a beaker.
