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【单选题】
下列根据实验操作和现象所得出的结论正确的是（ ） 选项 实验操作 实验现象 结论A.
测定等浓度的Na 2 CO 3 和Na 2 SO 3 溶液的pH 前者pH比后者的大 非金属性：S＞C
B.
SO 2 通入酸性高锰酸钾溶液 高锰酸钾溶液褪色 SO 2 具有漂白性
C.
溶液中滴加稀NaOH溶液，将湿润红色石蕊试纸置于试管口 试纸不变蓝 原溶液中无
D.
向等浓度的KCl、KI混合液中滴加AgNO 3 溶液 先出现黄色沉淀 Ksp(AgCl)> Ksp(AgI)
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举一反三
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