Ответы на вопрос:
C+2h2=ch4 ch4+cl2=ch3cl 2ch3cl+2na = ch3-ch3+2nacl ch3-ch3+cl2=ch3ch2cl+hcl ch3ch2cl+naoh = ch3ch2oh+nacl ch3ch2oh+3o2=2co2+3h2o co2+2koh=k2co3+h2o k2co3 = k2o+co2 k2o+h2o=2koh
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