Chemistry Practical class XI, XII (11,12)
TO STUDY THE ELECTROLYSIS OF WATER ACIDULATED WITH DIL. H₂SO4.
THEORY: Pure water is a weak electrolyte. It ionises very little. Hence it is not a good conductor of electricity. But if it is acidulated…
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28. TO SEPARATE A MIXTURE OF TWO SOLUBLE SOLIDS [SAY KNO3+ CU(NO3)2] BY FRACTIONAL CRYSTALLIZATION.
THEORY: Fractional crystallization is a fairly successful method of separating the components of a mixture of two or more soluble…
27. TO PREPARE A SATURATED SOLUTION OF AN IMPURE SALT, AND TO OBTAIN THE PURE CRYSTALS OF THE SAME AFTER CRYSTALLIZATION.
THEORY: Crystals are homogenous particles having regular and definite geometric shapes. When a saturated solution of a substance is gradually…
26. TO SEPARATE THE COMPONENTS OF THE MIXTURE OF TWO IMMISCIBLE LIQUIDS.
(A) OIL-WATER MIXTURE (B) CHLOROFORM-WATER MIXTURE THEORY: Immiscible liquid-liquid mixtures like oil and water, or chloroform and water can be…
25. TO DETECT THE PRESENCE OF DISSOLVED SOLIDS IN THE GIVEN AQUEOUS SOLUTION, AND TO RECOVER THE SOLVENT FROM THE SOLUTION.
THEORY: Distillation is the process of converting a liquid into its vapour by the application of heat, and then condensing…
