题干

实验室有一瓶放置已久的固体干燥剂M,某小组为研究其成分进行如下探究。
实验一:进行焰色反应后,确定样品中只有钙、钠两种金属元素。
实验二:取少量样品继续进行如下探究。

① A是____ , 溶液B的溶质是____
② 该样品M的成分可能是____
③ 上述流程图中,若先加入足量氯化钙溶液再加入酚酞____(填“能”或“不能”)确定溶液B的成分。
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答案(点此获取答案解析)

碳酸钙,碳酸钠、氢氧化钠,①氢氧化钙和碳酸钠,②氢氧化钙、碳酸钠、碳酸钙,能

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