Ответы на вопрос:
CH3-CH3 + CL2 = CH3-CH2CL + HCL
2 CH3-CH2CL + 2NA = 2NACL + CH3-CH2-CH2-CH3
CH3-CH2-CH2-CH3 -> CH2=CH2 + CH3-CH3
CH2=CH2 -> C2H2 + H2
Cuo+2hbr=cubr2+h2o hcl+hbr≠ koh+hbr=kbr+h2o na2sio3+2hbr=2nabr+h2sio3↓ mg+2hbr=mgbr2+h2
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