a和b为两份质量相等的固体,已知a为氯酸钾,b为混有少量二氧化锰

a和b为两份质量相等的固体,已知a为氯酸钾,b为混有少量二氧化锰的氯酸钾。当分别同时加热a和b至完全反应时,能正确表示生成氧气的质量随反应时间而变化的图像是

 

 

 

答案

A

解析:略

 

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