Which of the following equations represents a substitution reaction?
-
C 2H10(g) + CI 2(g) → C4H9 CI(g) + HCI(g)
- C 2H4(g) + HCI (g) → C 2H5 CI(l)
- C2H2(g) + 2H 2(g) → C 2H6(g)
- C 3H4(g) + 402(g) → 3CO2(g) + 2H 2O(g)