Ответы на вопрос:
сacl2 + na2co3 = caco3 + 2nacl
caco3 -> cao + co2
cao + co2 = caco3
caco3 + 2naoh = na2co3 + ca(oh)2
C3h8+cl2-> c3h7cl+hcl c3h7cl+koh-> c3h7oh+kcl 5c2h5-ch2-oh+2kmno4+3h2so4-> 5c2h5cho+2mnso4+k2so4+8h2o 5c2h5cho+ 2kmno4+3h2so4-> 5c2h5cooh+2mnso4+k2so4+3h2o c2h5cooh+ho-ch=ch -> c2h5cooch=ch
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