The order of K_(eq) values for the following keto-enol equilibrium constants is CH_(3)-CHO overset(K_(1))hArrCH_(2)=CH-OH, CH_(3)-overset(O)overset(||)(C)-CH_(2)-overset(O)overset(||)(C)-CH_(3)overset(K_(2))hArrCH_(3)-overset(OH)overset(|)(C)=CH-overset(O)overset(||)(C)-CH_(3) {:(""O""OH),("||""|"),(CH_(3)-C-CH_(3)overset(K_(3))hArrCH_(2)=C-CH_(3)):}

The order of K_(eq) values for the following keto-enol equilibrium con

1.	The order of K_(eq) values for the following keto-enol equilibrium constants is CH_(3)-CHO overset(K_(1))hArrCH_(2)=CH-OH, CH_(3)-overset(O)overset(\|\|)(C)-CH_(2)-overset(O)overset(\|\|)(C)-CH_(3)overset(K_(2))hArrCH_(3)-overset(OH)overset(\|)(C)=CH-overset(O)overset(\|\|)(C)-CH_(3) {:(""O""OH),("\|\|""\|"),(CH_(3)-C-CH_(3)overset(K_(3))hArrCH_(2)=C-CH_(3)):}
Answer» `K_(1) gt K_(2) gt K_(3)` `K_(2) gt K_(3) gt K_(1)` `K_(2) gt K_(1) gt K_(3)` `K_(1) gt K_(3) gt K_(2)` Solution :In `CH_(3)-overset(O)overset(\|\|)(C)-CH_(2)-overset(O)overset(\|\|)(C)-CH_(3)`, the enol form is stable DUE to INTRAMOLECULAR H-bonding Hence enol content MAXIMUM (out of `CH_(3)CHO` and `CH_(3)-underset(O)underset(\|\|)(C)-CH_(3)`) more the number of hyperconjugating H-atom, more the enol content. Hence enol content in `CH_(3)-underset(O)underset(\|\|)(C)-CH_(3)gt CH_(3)CHO` `RARR K_(2) gt K_(3) gt K_(1)` Hence choice (b) is correct while (a), (c) and (d) are incorrect.