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【简答题】
某化工厂为综合利用FeSO 4 ，设计了以下工艺流程如下图一.煅烧炉1中发生的部分化学反应有：FeCO 3 FeO+CO 2 ↑ C+CO 2 2CO 图一 图二 （1）煤粉、H 2 既是重要的化工原料又是重要的能源，氢氧燃料电池可以将 能转化成电能，煤燃烧主要讲 能转化为热能 ． （2）煅烧炉1中还会发生FeO和CO反应，其方程式为 ，X气体的化学式是 ；循环利用X的优点是 （3）下列金属能从FeSO 4 溶液中置换出Fe的是 （填字母） a、Al b、Cu c、Ag （4）实验室模拟操作a 的过程是蒸发浓缩、 、过滤干燥 （5）请设计实验证明（NH 4 ）SO 4 是铵态氮肥,填在上图二中.
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