b) CaC2+ H2O-> c)CH4+Cl2-> d)C2H4+Br2-> a)C6H6+Br2->

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1. a, $C_6H_6+Br_2\xrightarrow[t^o]{Fe} C_6H_5Br+HBr$

   b, $CaC_2+2H_2O\to Ca(OH)_2+C_2H_2$

   c, $CH_4+Cl_2\xrightarrow{\text{ánh sáng}} CH_3Cl+HCl$

   d, $C_2H_4+Br_2\to C_2H_4Br_2$ 

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