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प्रश्न
What would you observe in the following case:
Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.
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उत्तर
Charring of sugar takes place. Sulphuric acid dehydrates sugar, leaving behind carbon, which is black. Black charred residue is observed.
\[\ce{C12H22O11 ->[Conc. H2SO4] \underset{Black charred residue}{12 C + 11H2O}}\]
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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
Name the products formed when hot and concentrated sulphuric acid reacts with Sulphur.
Name the following:
Products obtained by treating ferrous sulphide with dilute sulphuric acid.
Name the following:
The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.
Give reason for the following:
Sulphuric acid can form two kinds of salts with sodium chloride.
Describe the reaction that show
Dilute sulphuric acid behaves as dibasic acid.
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 : Carbon dioxide
State one appropriate observation of the following:
Dehydration of concentrated sulphuric acid with sugar crystals.
Give a balanced chemical equation for the action of sulphuric acid on the following:
Potassium hydrogen carbonate
