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प्रश्न
State one appropriate observation of the following:
Concentrated sulphuric acid is added dropwise to a crystal of hydrated copper sulphate.
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उत्तर
When conc. H2SO4 is added to a crystal of hydrated copper sulphate, it removes water of crystallisation from salt.
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संबंधित प्रश्न
Write balanced chemical equations to show how SO3 is converted to Sulphuric acid in the contact process.
Give two balanced reactions of each type to show the following properties of sulphuric acid:
Hygroscopic nature
Describe the reaction that show
Concentrated sulphuric acid is a dehydrating agent.
How will you distinguish between dilute H2SO4 and conc. H2SO4 ?
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.
Name the gas evolved in following case:
The gas produced by the action of concentrated sulphuric acid on sodium chloride.
In the given equation identify the role played by concentrated sulphuric acid S + 2H2SO4→ 3SO2 + 2H2O
Dilute sulphuric acid will produce a white precipitate when added to a solution of ______.
Distinguish between the following pair of compounds using the test given with brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.
