Complete the following reactions :
`C_2H_4 + HBr rarr`

Complete the following reactions : C_2H_4+O_2 rarr

Complete the following reactions : C_(2)H_6 + O_2 rarr .......... + ...........

Complete the following reactions : C + H_2 rarr

Complete the following reactions : C_2H_4 + H_2O overset(H_2SO_4) rarr

Complete the following reactions : Al_4C_3 + H_2O rarr ........... + ................

Complete the following reactions : C_2H_5Br + KOH(alc) overset(Delta) rarr

Complete the following reactions : C_2H_5 I + 2 '[H] overset(Zn-Cu)underset("Couple alcohol") rarr ........... + ...........

Complete the following reactions : (i) P_4 + SOCl_2 rarr

Complete the following reactions : (CH_2COOH)2 + NaOH rarr

Complete the following reaction , HBr + H_2SO_4 rarr