Giúp mk giải vs ah...

Đáp án:

a, $CH_4+2O_2\xrightarrow{{t^o}} CO_2+2H_2O$ 

b, $C_2H_4+3O_2\xrightarrow{{t^o}} 2CO_2+2H_2O$ 

c, $2C_2H_2+5O_2\xrightarrow{{t^o}} 4CO_2+2H_2O$ 

d, $nCH_2=CH_2\xrightarrow{{t^o, p, xt}} (\kern-6pt-CH_2-CH_2-\kern-6pt)_n$ 

e, $CH\equiv CH+2Br_2\to CHBr_2-CHBr_2$ 

f, $CH_2=CH_2+Br_2\to CH_2Br-CH_2Br$ 

g, $CaC_2+2H_2O\to Ca(OH)_2+C_2H_2$ 

h, $CH_4+Cl_2\xrightarrow{{as}} CH_3Cl+HCl$ 

i, $C_2H_4+H_2\xrightarrow{{Ni, t^o}} C_2H_6$ 

j, $C_2H_2+2H_2\xrightarrow{{Ni, t^o}} C_2H_6$