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प्रश्न
Give reason for the following:
Cotton clothes get burnt with concentrated sulphuric acid.
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उत्तर
Cotton contains cellulose. When cotton is treated with concentrated sulphuric acid it removes water from cotton and carbon is left behind. This way cotton clothes get burnt.
\[\ce{(C6H10O5)n ->[Conc.H2SO4] 5(C)n + 6(H2O)n}\]
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संबंधित प्रश्न
Give one equation to show the following properties of sulphuric acid:
As a non-volatile acid
Give two balanced reactions of each type to show the following properties of sulphuric acid:
Hygroscopic nature
Give two balanced reactions of the type to show the following property of sulphuric acid:
Non-volatile nature
What would you observe in the following case?
Concentrated sulphuric acid is added to equal volumes of cold water.
What would you observe in the following case?
Hot concentrated sulphuric acid is added to sodium chloride crystals.
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 : Sulphur dioxide
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Copper sulphate from copper.
Give one equation to show the following property of sulphuric acid:
Dehydrating property
Distinguish between the following pair of compounds using the test given with brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
Rewrite the following statement by adding the correct word, as shown in the example:
|
Example: Given Statement: Ammonia changes moist red litmus to blue. Correct Statement: Aqueous ammonia changes moist red litmus to blue. |
Sulphuric acid acts as a dehydrating agent.
