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प्रश्न
Give reasons for the following:
Brisk effervescence is seen when oil of vitriol is added to sodium carbonate.
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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 oil of vitriol.
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
Complete the following equations :
S + conc.HNO3 →
Give examples of the use of sulphuric acid as
An electrolyte in everyday use
How will you distinguish between conc. HCl and conc. H2SO4?
How will you identify?
Sulphur dioxide gas
Sulphuric acid is manufactured by the contact process.
Name the catalyst used.
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the sulphur.
State the observation for the following, when:
Concentrated sulphuric acid is added to carbon.
Identify the following:
The element having electronic configuration 2, 8, 6.
