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प्रश्न
What is meant by the following term?
Fuming nitric acid
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उत्तर
It contains NO2 dissolved in concentrated HNO3. It is obtained by distilling concentrated HNO3 with a small amount of starch.
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संबंधित प्रश्न
Write balanced chemical equations for Action of hot and concentrated Nitric acid on copper
Ammonia is used in the Ostwald process.
Why is quartz used in this process?
Write a balanced equation and name the products formed when zinc reacts with dilute nitric acid.
Write an equation for the following conversions A, B, C and D.
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
Write the equations involved in Ostwald process.
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
State the conditions for the oxidation of ammonia to nitrogen monoxide [nitric oxide], in the manufacture of nitric acid by Ostwald's process. Write the balanced equcation for the reaction.
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
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.
