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प्रश्न
Name the following:
Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.
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उत्तर
When SO3 is dissolved in 98% sulphuric acid it forms oleum.
SO3 + H2SO4 → H2S2O7
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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.
Copy and complete the following table:
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
Write a balanced chemical equation for each of the following reactions :
Action of dilute sulphuric acid on zinc sulphide.
What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.
Give reason for the following:
Concentrated sulphuric acid must be stored in airtight bottles.
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:
- Hydrogen
- Sulphur dioxide
- Carbon dioxide
- Zinc Carbonate (two steps required).
Write a balanced chemical equation:
When hot and concentrated sulphuric acid reacts with the sulphur.
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:
\[\ce{Sulphite/hydrogen sulphite + Acid -> \underline{\phantom{.......}} + \underline{\phantom{.......}} + \underline{\phantom{.......}}}\]
