[题目]如图是一组检验氯气性质的装置.(1)现关闭活塞K.若有色布条是干燥的.溶液B为浓硫酸.则有色布条 ,若溶液B为水.则有色布条 ,若溶液B为饱和的NaHCO3溶液.则有色布条 .(2)现打开K.溶液B为氢氧化钠溶液.通入的Cl2是湿润的.布条是干燥的.则有色布条 . 题目和参考答案——青夏教育精英家教网—

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【题目】如图是一组检验氯气性质的装置。

(1)现关闭活塞K，若有色布条是干燥的，溶液B为浓硫酸，则有色布条________；若溶液B为水，则有色布条________；若溶液B为饱和的NaHCO3溶液，则有色布条________。

(2)现打开K，溶液B为氢氧化钠溶液，通入的Cl2是湿润的，布条是干燥的，则有色布条________。

【答案】(1)不褪色褪色不褪色

(2)褪色

【解析】(1)关闭K通入Cl2，若B为浓硫酸，则进入(Ⅱ)的是干燥的Cl2，有色布条不褪色；若B为水，则进入(Ⅱ)的是湿润的Cl2，有色布条褪色；若B是NaHCO3溶液，则Cl2在(Ⅰ)中被消耗，有色布条不褪色。

(2)打开K，尽管B是NaOH溶液，湿润的Cl2还是直接进入(Ⅱ)，有色布条褪色。

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