question_answer

In which of the following reaction backward reaction is favoured.

I. \[H-C\equiv C-H+\overset{\oplus }{\mathop{N}}\,a\overset{\Theta }{\mathop{C}}\,{{H}_{3}}C{{H}_{4}}+H-C\equiv \overset{\Theta }{\mathop{C}}\,\overset{\oplus }{\mathop{N}}\,a\]II. \[C{{H}_{3}}\equiv \underset{\underset{O}{\mathop{\parallel }}\,}{\mathop{CO}}\,-H+\overset{\oplus }{\mathop{N}}\,a\overset{\Theta }{\mathop{O}}\,C{{H}_{3}}\]\[C{{H}_{3}}\equiv \underset{\underset{O}{\mathop{\parallel }}\,}{\mathop{C}}\,-\overset{\Theta }{\mathop{O}}\,\overset{\oplus }{\mathop{N}}\,a+C{{H}_{3}}OH\]

III.

IV.

V.

VI.

A) I, II, III, IV only

B) III, IV, V only

C) III, VI only

D) III, IV only

Correct Answer: D

Solution :

Acidic strength order

Acid Base reaction occur more stronger acid & more stronger base side to less stronger acid & less stronger base