(a) Prepare benzoic acid from Ethylbenzene.
(c) Why `pk_a" of "F-CH_2_- COOH` is lower than `Cl-CH_2-COOH`

Why is pKa of F-CH_(2)COOH lower than that of Cl-CH_(2)COOH ?

(a) Write the chemical equation for the reaction involved in Cannizzaro reaction. (b) Draw the structure of the semicarbazone of ethanal. (c ) Why pKa of F-CH_(2) -COOH is lower than that of Cl-CH_(2)-COOH ? (d) Write the product in the following reaction : CH_(3) - CH = CH - CH_(2) CN underset((ii) H_(2)O)overset((i) DIBAl-H)rarr (e) How can you distinguish between propanal and propanone?

Me_3 C CH_2 COOH is more acidic than Me_3 SiCH_2 COOH.

Why is CH_(2)=CH-COOH a stronger acid than CH_(3)CH_(2)COOH ?

How will you convert the following: (a) Toluene to benzoic acid (b) Write products of the following reactions : (c) Which acid of each pair shown here would you expect to be stronger? (i) F-CH_2 -COOH or CI-CH_2 -COOH

Write the IUPAC name of HOOC-CH_2 - overset(COOH) overset(|)CH-CH_2 -COOH

Explain the following : (a) In gaseous phase, the acidic characters of the following are : (i) CH_3 CH_2 COOH (I) gt CH_3 COOH (II) (ii) ClCH_2COOH (III) gt FCH_2 COOH (IV) (iii) Me_3 C-OH (V) gt MeCH_2 CH_2 CH_2 OH (VI) . (b) Account for the following differences in the acidic characters of the following : (i) (I) Me_3 C-CH_2 -COOH gt (II) Me_3 SICH_2 COOH (ii) (III) H_2 C = CHCH_2 COOH gt (IV) CH_3 CH_2 COOH (iii) (V) HC -= C - CH_2COOH (pK_a 3.22) gt (VI) H_2 C = CH CH_2 COOH (pK_a = 4.35) (iv) CH_(3)-underset(O)underset(||)(C)-CH_(2)-COOH gt (v) (IX) N -= C - CH_2 COOH gt (X) CH_3 COCH_2 -COOH (vi) (XI) PhCh_2 COOH gt (XII) CH_2 = CHCH_2 COOH .