Which of the following is the correct order of acidic character?
H2O>C2H2>C2H6>C2H4
C2H2>C2H4>C2H6>H2O
H2O>C2H2>C2H4>C2H6
C2H2>H2O>C2H4>C2H6
The general order of acidity is
H2O>HC≡CH>H2C=CH2>CH3−CH3