Question

Although C-H bond in acetylene has greatest bond energy of all C-H bond, yet it is most acidic.
If true enter 1 else 0.

• A. 1

Answer 1

The correct option is A 1
Although C-H bond in acetylene has greatest bond energy of all C-H bond, yet it is most acidic. The C atom in actylene is sp hybridized. The percentage s character is 50 %. The s electrons are closer to nucleus than p electrons. Hence, when the s character is high, the electrons of C-H bond of acetylene are more towards carbon. Hence, the hydrogen atom in acetylene can be easily removed.