What is the correct increasing order of extent of deprotonation of the following acids in its aqueous solution?I  CH32CHOOH                       II  CH3CH2COOHIII  Cl2CHCH2COOH                 IV  CH3CCl2COOH

Electron withdrawing group (Cl) increases acidic strength while electron donating group −CH3 decreases acidic strength. Also magnitude of inductive effect decreases drastically on increasing distance, IV is stronger acid than III.Two methyl groups (in I) gives greater +I-effect than onemethyl group (in II), hence I is a weaker acid than II.Two -Cl from closer position in IV exert greater −I-effect than the same from larger distance in III, hence IV is stronger acid than III.