Question

Give the name and molecular formula of alkane alkene & alkyne. Also arrange them in
increasing order of acidic nature.​

Answer 1

Explanation:

Molecular formula,

Alkane-- CnH2n+2

Alkene-- CnH2n

Alkyne-- CnH2n-2

Acidic nature,

Due to presence of more s-character, the alkynes are more electronegative. Thus in Ethyne hydrogen atoms can be liberated as protons more easily.

Therefore,

Alkynes are more acidic than alkenes, which are more acidic than alkanes.

Answer 2

Alkanes have the formula CnH₂n+₂
Alkenes have the formula CnH₂n
Alkynes use the formula CnH₂n-₂


n is in subscript

Alkyne -most acidic
Alkane - least acidic