Question

Why Me3CCH2COOH is more acidic than Me3SiCH2COOH ?

Answer 1

  I suppose the electronegavity of C is more than Si and hence C resists a bit in inductive effect than Si

Answer 2

down the group basic character increases as both the compounds have the difference of only Si and C and according to electronegativity C is more electronegative and will attract negative charge towards itself so acidic character of first one should be more than second.