Question

when happened when 1,2 dicloro methane is heated with zinc metal​

Answer 1

Answer:

Explanation:

I am not 100 % certain on this one but I have a reasonable guess. 1,2-dihalo compounds tend to do the following with monovalent metals:

Br-CH2-CH2-Br + 2‘M’ → [M-CH2-CH2-Br] + MBr → CH2=CH2 + MBr

I am guessing then that with Zn the reaction is:

Br-CH2-CH2-Br + Zn → [BrZn-CH2-CH2-Br] → CH2=CH2 + ZnBr2