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zen yang zheng que shu xie you fu jia tiao jian de li zi fang cheng shi
Pages: 152
Year: Issue:  4
Journal: Journal of Puyang College of Education

Abstract: <正>一、酸碱中和式复分解反应多元弱酸(酸性氧化物)与碱溶液的反应及多元弱酸盐与酸溶液的反应:例1.向澄清石灰水中通入CO2气体条件1:通入少量CO2气体CO2+Ca2++20H-=CaCO3↓+H2O条件2:通入过量CO2气体C02+OH-=HCO3-条件3:如果通入的CO2与Ca(OH)2的物质的量之比为3:2,则离子方程式如下: 3CO2+Ca2++4OH-=CaCO3↓+2HCO3-+H2O对于条件3的处理可以采取两种方式,一是考虑CO2
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