(6分)根据下列实验装置图回答: A B C D E (1)实验室加热高锰酸钾制氧气的发生装置用的是 ;反应的化学方程式是 。用过氧化氢和二氧化锰制氧气的化学反应的方程式是 ;收集若选用装置E,则气体应由 (填导管口代号)进入集气瓶。 (2)验证二氧化碳与水能反应若选用装置E,则气体应由 (填导管口代号)进入集气瓶,装置E内所选择的试剂是 。
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