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| 1. |
Arrange the following increasing order of their boiling point: C_(4)H_(9)-NH_(2),(C_(2)H_(5))_(2)NH,C_(2)H_(5)N(CH_(3))_(2). |
| Answer» Solution :BOILING points depends upon the extent of H-bonding which, in TURN, depends upon the number of H-atoms present on the N-atom. Since `C_(4)H_(9)NH_(2)` has two, `(C_(2)H_(5))NH` has one and `C_(2)H_(5)(CH_(3))_(2)` has no hydrogen linked to nitrogen, therefore, boiling points decrease as the extent H-bonding DECREASES, i.e., boiling points decrease in the ORDER: `C_(4)H_(9)NH_(2) t (C_(2)H_(5))_(2)NH gt C_(2)H_(5)N(CH_(3))_(2)`. | |