Question

order of reactivity of `C_2H_6, C_2H_4` and `C_2H_2` is
A. `C_2H_6 gt C_2H_4 gt C_2H_2`
B. `C_2H_2 gt C_2H_6 gt C_2H_4`
C. `C_2 H_2 gt C_2H_4 gt C_2H_6`
D. All are equally reactive

Answer 1

Correct Answer - C
Unsaturated hydrocarbons are more reactive than saturated hydrocarbons . Among ethyne `(C_2H_2)` and ethene `(C_2H_4)` , the later is more reactive as `C-=C` triple bond is quite strong bond and therefore ethyne generally require catalysts (like `Hg^(2+)` etc ) in its reactions