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氯及其化合物

> 下列有关物质的性质或应用不正确的是 A．一定条件下，镁和铁的单质与水反应都有氢气生成 B．浓硫酸能干燥SO2、NO2等气体，说明浓硫酸具有吸水性 C．SO2具有漂白性，通入紫色石蕊溶液中能使溶液先变红后褪色 D．可用FeCl3溶液除去试管内壁上的难以刷去的铜迹

问题：

发布时间：2024-09-13

下列有关物质的性质或应用不正确的是

A．一定条件下，镁和铁的单质与水反应都有氢气生成

B．浓硫酸能干燥SO₂、NO₂等气体，说明浓硫酸具有吸水性

C．SO₂具有漂白性，通入紫色石蕊溶液中能使溶液先变红后褪色

D．可用FeCl₃溶液除去试管内壁上的难以刷去的铜迹

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