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有这样一道习题:“淀粉-KI 试纸常用来检验Cl_2,但__(能或不能)用来检验氯化物或 KClO_(?)里的氯”。笔者认为值得商榷。使用淀粉-KI 试纸可检验 Cl_2,是因为 Cl_2与
There is such an exercise: “The starch-KI paper is commonly used to test Cl_2, but __ (can or cannot) is used to test chlorine in chloride or KClO_ (?).” The author thinks it is worth discussing. Using starch-KI paper can test Cl_2 because Cl_2