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प्रश्न
State the observation for the following, when:
Concentrated sulphuric acid is added to carbon.
उत्तर
Sulphuric acid is a strong oxidising agent. When it is added to carbon it oxidises carbon and the evolution of colourless gas are observed. This gas is carbon dioxide along with sulphur dioxide gas. The reaction is given as:
\[\ce{C + 2H2SO4 -> CO2↑ + 2H2O + 2SO2↑}\]
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संबंधित प्रश्न
What is the name given to the salts of sulphurous acid?
Copy and complete the following table:
| Column 1 Substance reacted with acid |
Column 2 Dilute or concentrated acid |
Column 3 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.
Distinguish between the following pairs of compounds using the reagent given in the bracket.
Ferrous sulphate solution and ferric sulphate solution. (Using sodium hydroxide solution)
Complete the following equations :
S + conc.HNO3 →
What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.
In using sulphuric acid to prepare other acids, as mentioned above, which property of sulphuric acid is used ?
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).
Which property of sulphuric acid accounts for its use as a dehydrating agent?
The following are the typical properties of dilute acid. Complete them by inserting suitable words:
Sulphite/hydrogen sulphite + Acid → ______ + ______ + ______
