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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
What is the name given to the salts of sulphurous acid?
Give reasons for the following:
Sulphuric acid forms two types of salts with NaOH.
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
Complete the following equations :
C + cons. H2SO4
How will you identify?
Sulphur dioxide gas
Sulphuric acid is manufactured by the contact process
Name a gas that can be oxidized to sulphur.
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the copper.
Which property of sulphuric acid accounts for its use as a dehydrating agent?
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Carbonate/hydrogen carbonate + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
Arrange the following as per the instruction given in the bracket:
Sulphuric acid, Phosphoric acid, Acetic acid (increasing order of number of replaceable H atoms per molecule).
