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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.
\[\ce{Na2CO3 + H2SO4 → Na2SO4 + H2O + CO2↑}\]
संबंधित प्रश्न
Name the following:
Products obtained by dissolving sulphur dioxide and chlorine in water.
Name the following:
Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.
What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.
How are the following conversion brought about? Give equation and condition:
Aqueous barium chloride to barium sulphate.
Making use only of substances chosen from those given below:
Dilute sulphuric acid
Sodium carbonate
Zinc
Sodium sulphite
Lead
Salcium carbonate
Give the equation for the reaction by which you could obtain:
(i) Hydrogen
(ii) Sulphur dioxide
(iii) Carbon dioxide
(iv) Zinc Carbonate (two steps required).
How will you identify?
Sulphur dioxide gas
Sulphuric acid is manufactured by the contact process.
Name the chemical used to dissolve SO3 and also name the product formed. Give all the main reactions to this process.
The following is the typical property of dilute acid. Complete it by inserting suitable words:
\[\ce{Sulphite/hydrogen sulphite + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
Identify the following:
The element having electronic configuration 2, 8, 6.
What property of Sulphuric acid is exhibited in the following case?
In the preparation of HCI gas when it reacts with Sodium chloride.
