17.4 Give explanations for the following observations. (a) pK, values for CF;CO,H and CH3CO,H are 0.23 and 4.75, respectively. (b) The dipole moment of a gas phase NH3 molecule is 1.47 D, but that of NF3 is 0.24 D. (c) In electrophilic substitution reactions in monosubstituted aryl compounds C,H4X, X = Me is activating and ortho- and para-directing, whereas X=CF3 is deactivating and meta- directing.

17.4 Give explanations for the following observations. (a) pK, values for CF;CO,H and CH3CO,H are 0.23 and 4.75, respectively. (b) The dipole moment of a gas phase NH3 molecule is 1.47 D, but that of NF3 is 0.24 D. (c) In electrophilic substitution reactions in monosubstituted aryl compounds C,H4X, X = Me is activating and ortho- and para-directing, whereas X=CF3 is deactivating and meta- directing.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter12: Gravimetric Methods Of Analysis

Section: Chapter Questions

Problem 12.6QAP

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