作业帮who can tell me the reason ?在蒸发皿中加热蒸干并灼烧（低于400℃）下列物质的溶液,可以得到该物质固体的是（ ） A、氯化铝 B、碳酸氢钠 C、硫酸镁 D、高锰酸钾
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who can tell me the reason ?在蒸发皿中加热蒸干并灼烧（低于400℃）下列物质的溶液,可以得到该物质固体的是（ ） A、氯化铝 B、碳酸氢钠 C、硫酸镁 D、高锰酸钾
who can tell me the reason ?
在蒸发皿中加热蒸干并灼烧（低于400℃）下列物质的溶液,可以得到该物质固体的是（ ）
A、氯化铝 B、碳酸氢钠 C、硫酸镁 D、高锰酸钾
who can tell me the reason ?在蒸发皿中加热蒸干并灼烧（低于400℃）下列物质的溶液,可以得到该物质固体的是（ ） A、氯化铝 B、碳酸氢钠 C、硫酸镁 D、高锰酸钾
我觉得是c,制NaCl的实验中溶解的粗盐含有MgSO4
D
排除法 D 吧 高锰酸钾的分解温度高于400吧
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