酸碱盐的全部化学性质和特征是什么?还有全部他们之间俩俩反应的化学方程式有那些?

2025-03-15 20:41:17
推荐回答(1个)
回答1:

酸 的 通 性
一 般 规 律

(1)跟指示剂反应 紫色石蕊试液遇酸变红色
无色酚酞试液遇酸不变色
(2)跟活泼金属起置换反应 酸 + 金属==盐 + 氢气
2HCl+Fe=FeCl2+H2↑
(3) 跟碱性氧化物反应 酸 + 性氧化物—→盐+水
3H2SO4+Fe2O3=Fe2(SO4)3+3H2O
(4)跟某些盐反应 酸+盐—→新酸+新盐
H2SO4+BaCl2=2HCl+BaSO4↓
(5)跟碱起中和反应 酸+碱—→盐+水
2HCl+Cu(OH)2=CuCl2+2H2O

碱的通性
一般规律

(1)跟指示剂反应 紫色石蕊试液遇碱变蓝色
无色酚酞试液遇碱变红色
(2)跟酸性氧化物反应 碱+酸性氧化物—→盐+水
2NaOH+CO2 = Na2CO3+H2O
(3)跟酸反应 碱+酸—→盐+水
Ba(OH)2+2HCl=BaCl2+2H2O
(4)跟某些盐反应 碱+盐—→新碱+新盐
Ca(OH)2+Na2CO3=CaCO3↓+2NaOH

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