⑤向Na2SiO3溶液中通入过量CO2气体 ______________________________________; ⑥Mg在CO2中燃烧 ________________________; ⑦向澄清石灰水中通入少量CO2气体 __________________________________ ; ⑧向澄清石灰水中通入过量CO2气体 ____________________; ⑨除去CO2中的CO _______________________;
Ca2++2OH-+CO2=== CaCO3↓+H2O