2018_2019学年高中化学第1章认识化学科学第2节研究物质性质的方法和程序第2课时专题讲座课件鲁科版必修1.ppt

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2018_2019学年高中化学第1章认识化学科学第2节研究物质性质的方法和程序第2课时专题讲座课件鲁科版必修1.ppt_第1页
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2018_2019学年高中化学第1章认识化学科学第2节研究物质性质的方法和程序第2课时专题讲座课件鲁科版必修1.ppt_第5页
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第1章 认识化学科学,专题讲座 Na2O2与H2O、CO2反应的规律 氯水与HClO的漂白性,第1章 认识化学科学,第1章 认识化学科学,第1章 认识化学科学,A,第1章 认识化学科学,第1章 认识化学科学,2.如图是一组探究氯气性质的装置。(1)现关闭活塞K,若有色布条是干燥的,溶液A为浓硫酸,则有色布条_;若溶液A为水,则有色布条_;若溶液A为饱和的NaHCO3溶液,则有色布条_。 (2)现打开K,溶液A为氢氧化钠溶液,通入的氯气是湿润的,布条是干燥的,则有色布条_。,不退色,退色,不退色,退色,第1章 认识化学科学,解析:(1)关闭K通入Cl2,若A为浓硫酸,则进入()的是干燥的Cl2,有色布条不退色;若A为水,则进入()的是湿润的Cl2,有色布条退色;若A是NaHCO3溶液,则Cl2在()中被消耗,有色布条不退色。(2)打开K,尽管A是NaOH溶液,湿润的Cl2还是直接进入(),有色布条退色。,

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