Question

CH4------------------------>X----------->Y--------------->Z
        1500 градусов       2H2         CL2 hv

Answer 1

2СН4 ---(1500°С (или ϟ), 0,01-0,1 с)---> НС≡СН + 3Н2
НС≡СН + 2Н2 ---(Ni, t°)---> CH3-CH3
CH3-CH3 + Cl2 ---(hv)---> CH3-CH2Cl + HCl