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一氧化碳还原氧化铁的实验【北京中考真题】 1.(06北京课标36)根据下图回答问题:⑴写出标有序号的仪器名称:a,b。⑵CO和Fe2O3均属于(填序号) 。①单质 ②氧化物③酸④碱 ⑤盐⑶澄清石灰水中可观察到的现象是 。⑷点燃b的目的是。⑸高温条件下此反应的化学方程式为 。2.(07北京37)某课外小组的同学们收集了含一氧化碳和二氧化碳的废气,为了确认这种废气的组成,他们在实验室按如下装置进行了
一氧化碳还原氧化铁的实验【北京中考真题】 1.(06北京课标36)根据下图回答问题:⑴写出标有序号的仪器名称:a,b。⑵CO和Fe2O3均属于(填序号) 。①单质 ②氧化物③酸④碱 ⑤盐⑶澄清石灰水中可观察到的现象是 。⑷点燃b的目的是。⑸高温条件下此反应的化学方程式为 。2.(07北京37)某课外小组的同学们收集了含一氧化碳和二氧化碳的废气,为了确认这种废气的组成,他们在实验室按如下装置进行了
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