Arrange the following:
(i) in decreasing order of pKb values C2H5NH2, C6H5NHCH3,(C2H5)2 and C6H5NH2.
(ii) in increasing order of basic strength C6H5NH2, C6H5N(CH3)2, (C2H5)2
(iii) increasing order of basic strength
(a) Aniline, p-nitroaniline and p-toluidine (b) C6H5NH2, C6H5NHCH3, C6H5CH2NH2
(iv)Decreasing order of basic strength in the gas phase C2H5NH2, (C2H5)2 NH, (C2H5)3 N and NH3 and NH3 .
(v) Increasing order of boiling point C2H5OH, (CH3)2, NH C2H5 NH2.
(vi) Increasing order of solubility in water C6H5NH2, (C2H5)2 NH, C2H5NH2.
