(1)碱
(2)CO 2 2NaOH + CO 2 Na 2CO 3 + H 2O
(3)Ca(OH) 2Na 2CO 3 + Ca(OH) 2 CaCO 3↓+ 2NaOH (其他答案合理给分)
(4)Na 2CO 3+2HCl NaCl + H 2O + CO 2↑
(5)NaCl、HCl
(1)碱
(2)CO 2 2NaOH + CO 2 Na 2CO 3 + H 2O
(3)Ca(OH) 2Na 2CO 3 + Ca(OH) 2 CaCO 3↓+ 2NaOH (其他答案合理给分)
(4)Na 2CO 3+2HCl NaCl + H 2O + CO 2↑
(5)NaCl、HCl