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प्रश्न
Give reasons for the following:
Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.
उत्तर
When sulphuric acid is added to sodium carbonate, it liberates carbon dioxide, which produces brisk effervescence.
\[\ce{Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2↑}\]
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संबंधित प्रश्न
Comment, sulphuric acid is referred to as King of chemicals.
What is the name given to the salts of sulphuric acid?
Copy and complete the following table:
| Column 1 Substance reacted with acid |
Column 2 Dilute or concentrated acid |
Column 3 Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
How are the following conversion brought about? Give equation and condition:
Aqueous lead nitrate to lead sulphate.
Fill in the blank with appropriate word/words :
For the reaction SO2 + O2⇌ SO3 + Heat, the favourable conditions are _________ and __________.
Fill in the blank with appropriate word/words :
Oil of Vitriol is ___________
HCl, HNO3 and H2SO4 are formulae of three compounds. Which of these compounds has the highest boiling point and which has the lowest?
Name the following:
A sulphate insoluble in water.
Sulphuric acid is manufactured by the contact process.
Name the chemical used to dissolve \[\ce{SO3}\] and also name the product formed. Give all the main reactions to this process.
Write a balanced chemical equation when hot and concentrated sulphuric acid reacts with the following:
Carbon
