Correct answer is 3. Give reason why and show the order of acidity for all options.:
5. More acidic then ethanol is .
(1) CH3CH2CH2CH2CH2CH2CH2CH3
(2) CH3CO2CH2CH3
(3) CH3COCH2COCH3
(4) CH3COCH3
Dear Student,
The correct answer is (3)
(3) is a β-keto ester. They are more acidic than ethanol. This is due to the presence of active methylene group CH2. Here a CH2 is sandwiched between two electron withdrawing carbonyl groups which makes the H of CH2 acidic.
(1) is an alkane which are not acidic. Esters and ketones both are less acidic than alcohols.
The order is (3) > ethanol > (4) > (2) > (1)
The correct answer is (3)
(3) is a β-keto ester. They are more acidic than ethanol. This is due to the presence of active methylene group CH2. Here a CH2 is sandwiched between two electron withdrawing carbonyl groups which makes the H of CH2 acidic.
(1) is an alkane which are not acidic. Esters and ketones both are less acidic than alcohols.
The order is (3) > ethanol > (4) > (2) > (1)