End of the reaction can be identified by the fact that when adding zinc sulfide into a test tube containing a little reaction solution, and sway the test tube and no yellow deposition can be seen.
用试管取少量反应溶液,往试管内加入硫化锌并摇晃,无黄色沉淀生成即为终点。
End of the reaction can be identified by the fact that when adding zinc sulfide into a test tube containing a little reaction solution, and sway the test tube and no yellow deposition can be seen.
用试管取少量反应溶液,往试管内加入硫化锌并摇晃,无黄色沉淀生成即为终点。
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