答案:(1)Ar K (2)NaOH (3)K+ Ca2+ Mg2+
(4)H2O 2H2O+2K===2KOH+H2↑ H2O+Cl2
HCl+HClO
(5)NaOH HBrO4 NaBr 黄 2NaBr+Cl2===2NaCl+Br2
(6)NaOH+Al(OH)3===NaAlO2+2H2O
-+2HO Al(OH)3+OH-===AlO22
(7)CCl4 橙红 (8)18 (9)
答案:(1)Ar K (2)NaOH (3)K+ Ca2+ Mg2+
(4)H2O 2H2O+2K===2KOH+H2↑ H2O+Cl2
HCl+HClO
(5)NaOH HBrO4 NaBr 黄 2NaBr+Cl2===2NaCl+Br2
(6)NaOH+Al(OH)3===NaAlO2+2H2O
-+2HO Al(OH)3+OH-===AlO22
(7)CCl4 橙红 (8)18 (9)