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प्रश्न
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
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उत्तर
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitrate should not be heated very strongly, above 200°C because a higher temperature can cause following problems:
1. Nitric acid would decompose to form nitrogen dioxide.
2. Sodium sulphate is formed which may stick to the glass and cannot be removed easily.
3. The glass apparatus may break.
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संबंधित प्रश्न
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Explain the following:
Concentrated nitric add appears yellow when it is left standing in a glass bottle.
Give two chemical equations for the following:
Reactions of nitric acid with non-metals.
Name a metal nitrate which on heating is changed into metal.
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.
What is meant by the following term?
Fuming nitric acid
Write balanced equation and name the product formed when :
Concentrated nitric acid is heated.
Dilute nitric acid is generally considered 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?
What happens when
Common salt solution is added to silver nitrate solution and NH3 solution add to it.
Explain why nitric acid is kept in a reagent bottle for a long time.
