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Arrange the following : 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 (ii) In decreasing order of basic strength : C_6 H_5 NH_2 , C_6 H_5N (CH_3)_2 , (C_2 H_5)_2 NH and CH_3 NH_2 (iii) Increasing order of basic strength : (a) Aniline, p-nitroanilineand p-toluidine (b) C_6 H_5 NH_2, C_6 H_5 NHCH_3 , C_6 H_5 CH_2 NH_2(iv) Decreasing order of basic strength in gas phase : C_2 H_5 NH_2 , (C_2 H_5) NH, (C_2 H_5)_3 N and NH_3 (v) Increasing order of boiling point : C_2 H_5 OH , (CH_3)_2 NH, C_2 H_5 NH_2 (vi) Increasing order of solubility in water : C_6 H_5 NH_2 , (C_2 H_5)_2 NH, C_2 H_5 NH_2 |
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Answer» Solution :(i) `C_6 H_5 NH_2 gt C_6H_5 NHCH_3 gt C_2 H_5 NH_2 gt (C_2H_5)_2 NH` (ii) `(C_2 H_5)_2 NH gt CH_3 NH_2 gt C_6 H_5 N (CH_3)_2 gt C_6 H_5 NH_2` (III) (a) p-nitroaniline `lt ` ANILINE `lt ` p-toluidine (b) `C_6 H_5 NHCH_3 lt C_6 H_5 CH_2 NH_2` (IV) `(C_2 H_5)_2 N gt (C_2 H_5)_2 NH gt C_2 H_5 NH_2 gt NH_3` (V) `(CH_3)_2 NH lt C_2 H_5 NH_2 lt C_2 H_5 OH` (vi) `C_6 H_5 NH_2 lt (C_2 H_5)_2 NH lt C_2 H_5 NH_2` |
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