Arrange the following compounds in decreasing order of their boiling points CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

Question

Arrange the following compounds in decreasing order of their boiling points CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3 (A) CH3CH2CH3 < CH3OCH3 < CH3CHO < CH3CH2OH (B) CH3CH2CH3 < CH3CHO < CH3OCH3 < CH3CH2OH (C) CH3CH2CH3 > CH3CHO > CH3OCH3 < CH3CH2OH (D) CH3CH2CH > CH3CHO > CH3OCH3 < CH3CH2CH3

Tardigrade Admin · Accepted Answer

Among these only CH3CH2OH undergoes H-bonding. So, it will have the highest boiling point. In thd case of remaining compounds, H3COCH3 has the highest molecular weight, then H3CCHO and lastly H3CCH2CH3. OH3CHO has higher boiling point than alkane due to apprciable intermolecular attraction ( dipole-dipole interaction).

Q. Arrange the following compounds in decreasing order of their boiling points
$C H_{3} C H O, C H_{3} C H 2 O H, C H_{3} OC H_{3}, C H_{3} C H_{2} C H_{3}$

$C H_{3} C H_{2} C H_{3} < C H_{3} OC H_{3} < C H_{3} C H O$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H_{3} < C H_{3} C H O < C H_{3} OC H_{3}$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H_{3} > C H_{3} C H O > C H_{3} OC H_{3}$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H > C H_{3} C H O > C H_{3} OC H_{3}$
$< C H_{3} C H_{2} C H_{3}$

Q. Arrange the following compounds in decreasing order of their boiling points CH3​CHO,CH3​CH2OH,CH3​OCH3​,CH3​CH2​CH3​

CH3​CH2​CH3​<CH3​OCH3​<CH3​CHO <CH3​CH2​OH

CH3​CH2​CH3​<CH3​CHO<CH3​OCH3​ <CH3​CH2​OH

CH3​CH2​CH3​>CH3​CHO>CH3​OCH3​ <CH3​CH2​OH

CH3​CH2​CH>CH3​CHO>CH3​OCH3​ <CH3​CH2​CH3​

Q. Arrange the following compounds in decreasing order of their boiling points
$C H_{3} C H O, C H_{3} C H 2 O H, C H_{3} OC H_{3}, C H_{3} C H_{2} C H_{3}$

$C H_{3} C H_{2} C H_{3} < C H_{3} OC H_{3} < C H_{3} C H O$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H_{3} < C H_{3} C H O < C H_{3} OC H_{3}$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H_{3} > C H_{3} C H O > C H_{3} OC H_{3}$
$< C H_{3} C H_{2} O H$

$C H_{3} C H_{2} C H > C H_{3} C H O > C H_{3} OC H_{3}$
$< C H_{3} C H_{2} C H_{3}$