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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…
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…
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…
24. TO SEPARATE THE VOLATILE COMPONENT FROM THE GIVEN MIXTURE OF A VOLATILE AND A NON-VOLATILE SOLIDS.
APPARATUS REQUIRED i) Porcelain basin ii) Funnel iii) Filter Paper iv) Wire…
23. TO SEPARATE THE INSOLUBLE COMPONENT IN PURE AND DRY STATE FROM THE GIVEN MIXTURE OF A SOLUBLE AND AN INSOLUBLE SOLIDS.
APPARATUS: 1) Beakers 2) Test tubes and test tube stand 3) wire…
TO STUDY THE ELECTROLYSIS OF WATER ACIDULATED WITH DIL. H₂SO4.
THEORY: Pure water is a weak electrolyte. It ionises very little. Hence…
21. TO STUDY THE RATE OF FLOW OF A LIQUID THROUGH OSTWALD’S VISCOMETER AND TO DETERMINE THE RELATIVE VISCOSITY OF AN UNKNOWN LIQUID.
THEORY: Viscosity (like surface tension) is another property of a liquid that…
20. TO DETERMINE THE RELATIVE SURFACE TENSION OF AN UNKNOWN LIQUID BY DROP COUNT METHOD.
THEORY: All the molecules of a liquid on the surface experience a…
19. TO INVESTIGATE THE EFFECT OF CONCENTRATION ON THE EQUILIBRIUM BETWEEN FERRIC IONS AND THIOCYANATE IONS.
THEORY: Ferric ions and thiocyanate ions react to establish the following equilibrium…