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प्रश्न
What is meant by the following terms?
Fuming nitric acid
उत्तर
Fuming nitric acid:
It contains NO2 dissolved in concentrated HNO3.lt is obtained by distilling concentrated HNO3 with little starch.
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संबंधित प्रश्न
Explain with the help of a balanced equation, the brown ring test for nitric acid.
What is the purpose of Conc. H2SO4 in the above preparation?
Write balanced equation and name the product formed when :
Sodium hydrogen carbonate is added to nitric acid.
Complete and balance the following equation :
HNO3 + FeSO4 + H2SO4 → ______________
Write the balanced equation for the equation preparation of nitric acid from potassium nitrate.
When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate. what is the special feature of the apparatus used?
Dilute nitric acid is generally considered to be a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Name the gas evolved:
The gas produced on heating sodium nitrate.
X, Y, and Z are three crystalline solids that are soluble in water and have 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.
Explain why nitric acid is kept in a reagent bottle for a long time.
