【題目】在實(shí)驗(yàn)室測(cè)定空氣中氧氣的含量實(shí)驗(yàn)，能否用硫代替紅磷？為什么？

________________________________________________________________________。

【答案】不能用硫代替紅磷，因?yàn)榱蛟诳諝庵猩傻亩趸蚴菤怏w，不能使集氣瓶?jī)?nèi)的氣壓減小

【解析】

試題分析：因?yàn)榱蛟诳諝庵猩傻亩趸蚴菤怏w，不能使集氣瓶?jī)?nèi)的氣壓減小所以不能用硫代替紅磷。

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