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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
Give reasons for the following:
A piece of wood becomes black when concentrated sulphuric acid is poured on it.
How are the following conversions brought about? Give equation and condition:
Sulphur trioxide to sulphur acid.
Give examples of the use of sulphuric acid as
An electrolyte in everyday use
How will you distinguish between conc. HCl and conc. H2SO4?
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 carbon.
Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write one equation. Each illustrates the above-mentioned properties of sulphuric acid.
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Base + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Sulphide + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
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).
