1 (2009 宁夏银川一中) 下列反应的离子方程式错误的是( A)

唐山客2022-10-04 11:39:544条回答

1 (2009 宁夏银川一中) 下列反应的离子方程式错误的是( A)
A 氯化铝溶液中加入过量的氨水 :Al3+ + 4NH3*H2O === AlO2- + 4NH4+ +2H2O
B 用氨水吸收过量的二氧化硫:NH3*H2O + SO2 === NH4+ + HSO3-
C 碳酸钠溶液中加入过量苯酚:C6H5OH +CO3 2- ===C6H5O- +HCO3-
D 次氯酸钙溶液中通入过量的二氧化碳:ClO- +CO2 +H2O ===HCO3- +HClO
麻烦解释下C C 中既然苯酚过量 为什么不能继续电离出H+ 与+HCO3- 反应呢
2 纯碱溶液中通入少量SO2 :H2O+2CO3 2- +SO2 ===2HCO3- +SO3 2-
H2O 电离应该是H+ 与 OH- ,为什么不是H+ 与 CO3 2- 结合成1摩尔HCO3- OH-与SO2结合成1摩尔HSO3- 求思路

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共4条回复
猫饭团疙瘩 共回答了13个问题 | 采纳率84.6%
强酸制弱酸原理~苯酚的酸性比碳酸弱,不能与碳酸氢根反应~同理亚硫酸氢根的酸性比碳酸氢根的强,只能生成碳酸氢根而不能生成硫磺氢根~
1年前
ygp12 共回答了9539个问题 | 采纳率0.2%
苯酚的酸性<碳酸
HSO3-是酸性的
1年前
254861205 共回答了1个问题 | 采纳率
路过……顺便说一句,好复杂哦
1年前
老人与SEA 共回答了63个问题 | 采纳率
氨水是弱碱,不会生成偏铝酸根的
1年前

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