Define the following terms with an example in each case: (i) Macromolecular sol (ii) Peptization (iii) Emulsion

Define the following terms with an example in each case: (i) Macromole

1.	Define the following terms with an example in each case: (i) Macromolecular sol (ii) Peptization (iii) Emulsion
Answer» (i) Macromolecular sol : When substances which possess very high molecular masses are dispersed in suitable dispersion medium, the colloidal solution formed are called macromolecular colloids. (ii) Peptization : Process of conversion of a fresh precipitate into sol by shaking it with disperion medium-in the presence of electrolyte is called peptisation.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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Define the following terms with an example in each case: (i) Macromolecular sol (ii) Peptization (iii) Emulsion

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