(1)分液漏斗;CaCO 3+2HCl=CaCl 2+H 2O+CO 2↑;2H 2O 2
2H 2O+O 2↑;分解反应;
(2)浸没漏斗下端(或形成液封);A;关闭旋塞;
(3)①BCDA或CDA;②C
(4)②④
(5)不可燃,不助燃,密度比空气大;灭火;
(6)ACDE
(1)分液漏斗;CaCO 3+2HCl=CaCl 2+H 2O+CO 2↑;2H 2O 2
2H 2O+O 2↑;分解反应;
(2)浸没漏斗下端(或形成液封);A;关闭旋塞;
(3)①BCDA或CDA;②C
(4)②④
(5)不可燃,不助燃,密度比空气大;灭火;
(6)ACDE