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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
Write an equation for the following conversions A, B, C and D.
How will you prepare the following from nitric acid?
Ferric nitrate
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Gas produced in air during lighting.
Can we use conc. HCl in place of Conc. H2SO4 ?
Give reason for the following:
Nitric acid is used in purification of gold.
Complete and balance the following equation :
C + HNO3 → ___________
Fill in the blank with appropriate word/words.
Ammonal is a mixture of ________ and __________
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The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
