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碳酸和氧化铝反应吗

2025-04-01 10:19:24

推荐回答（2个）

回答1：

水解是很微弱的，通常形成不了沉淀。
水解存在水解平衡，一样符合平衡移动原理

Al3++3H2O=可逆=Al（OH）3+3H+
H2CO3=可逆=2H++CO32- 电离出H+，溶液中H+浓度加大，
对于Al3+的水解平衡向逆向进行，Al（OH）3浓度就会更小，
比如AlO2-+2H2O=可逆=Al(OH)3+OH-
H2CO3=可逆=2H++CO32- 电离出H+，与AlO2-水解出的OH-
H++OH-=H2O，这样AlO2-水解出的OH-量减少，其水解平衡正向进行，
于是2AlO2-+CO2+3H2O==2Al(OH)3沉淀+CO32-

回答2：

当然反应啊

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