Предмет: Химия, автор: nastyazlobina12

Осуществить цепочку превращений
CaCO3-CaO-Ca(HO)2-Ca(NaO3)2-CaCO3-CO2
⇒Ca2
Очень надо!

Ответы

Автор ответа: ЛОЛ999

0

2Са+О2=2СаО
СаО+Н2О=Са (ОН) 2
Са (ОН) 2+СО2=СаСО3+Н2О
CaCO3+CO2+H2O=Ca(HCO3)2
Ca(HCO3)2 = CaCO3 + H2O + CO2

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