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प्रश्न
Name the following:
Gases obtained by treating carbon with hot concentrated sulphuric acid.
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उत्तर
Sulphur dioxide or carbon dioxide
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संबंधित प्रश्न
Identify the acid in the following case:
The acid which produces sugar charcoal from sugar.
Why is water not added to concentrated H2SO4 in order to dilute it?
Give a chemical test to distinguish between dilute sulphuric acid and dilute hydrochloric acid.
Give reason for the following:
Concentrated sulphuric acid is kept in airtight bottles.
Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Hydrogen
Copy and complete the following table.
Column 3 has the names of gases to be prepared using the substance you enter in column 1, along with dilute or concentrated sulphuric acid, as indicated in column 2.
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated sulphuric acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
Write the equation for the laboratory preparation of :
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Lead sulphate from lead nitrate.
State your observation for the following case :
Dry red rose petals are placed in the jar of sulphur dioxide.
Identify the salts P and Q from the observation given below:
On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution. Which is soluble in ammonium hydroxide solution.
Convert the following reaction into a balanced chemical equation:
Sodium hydroxide to sodium sulphate using sulphuric acid.
