题目

在呼吸面具和潜水艇中可用过氧化钠作为供氧剂。请选用适当的化学试剂和实验仪器,用下图中的实验装置进行实验,证明过氧化钠可作供氧剂。(1)A是制取CO2的装置,写出A中发生反应的离子方程式______________。(2)填写表中空格:仪器加入试剂加入该试剂的目的B饱和NaHCO3溶液_____________C__________________________DNaOH溶液_____________ (3)写出过氧化钠与二氧化碳反应的化学方程式______________________。(4)用_______________检验F中收集到的气体,现象是___________Doubting that the traveler carried drugs, the Customs officer stopped him and _______ his suitcase, but found nothing at all.A.looked upB.went throughC.searched forD.referred to
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