1个回答
(1)从过滤中可以得到CaCO
3
、来进行判断,可知分解的只是碳酸镁,分解生成氧化镁,白云石“轻烧”后固体产物的主要成份CaCO
3
、MgO;从表中可以看出,温度低于540℃时,物质不分解,高于840℃时,碳酸钙和碳酸镁都分解,因此该温度不超过700℃;
故答案为:CaCO
3
、MgO,700℃;
(2)加热的过程是放出氨气的过程,该过程中因为氧化镁跟水反应很少,因此涉及到的反应应该为:(NH
4
)
2
SO
4
+MgO
△
.
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更新于2018-09-13
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