【Daily Question】Chemical Analysis Edition, 2019.9.16
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This post was last edited by zjp on 2019-9-16 08:34. Multiple-choice question: Which of the following statements is incorrect regarding the treatment of mercury? （） A. First, adjust the pH of the mercury salt waste liquid to 8–10; then add an excess of Na2S, followed by FeSO4, to produce a co-precipitate of HgS and FeS, which can be recovered later. B. Mercury that has spilled on the floor can be covered with sulfur powder, and once it dries, it can be swept up. C. Mercury on the laboratory bench can be collected using appropriate methods in a beaker containing water. D. Floors where mercury has spilled can be sprayed with a 20% FeCl2 solution, and once it dries, they can be swept up. D
D. The floor where mercury has spilled can be sprayed with a 20% FeCl2 aqueous solution, and then cleaned after it dries