Daily Question】Chemical Analysis Edition, June 25, 2021

2021-06-25View Original

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In the reaction CH3OH + 6MnO4- + 8OH- = 6MnO42- + CO32- + 6H2O, the basic unit of CH3OH is A. CH3OH B. 1/2 CH3OH C. 1/3 CH3OH D. 1/6 CH3OH D

Reply #22021-06-25

D, 1/6 CH3OH

Reply #32021-06-25

D 1/6 CH3OH

Reply #42021-06-25

D, 1/6 CH3OH

Reply #52021-06-25

Choose D. From the perspective of electron gain and loss, the three hydrogen atoms in methanol other than the hydroxyl group are considered to have a valence of -1, losing six electrons. Permanganate gains an electron and becomes manganate (manganese in the +6 valence state). It seems that we didn’t encounter questions of this type when studying chemistry before, so I’m not quite sure why a methanol molecule has to be divided into six \"basic units\"; perhaps it’s because we didn’t study it properly back then.

Reply #62021-06-25

D, 1/6 CH3OH

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Daily Question】Chemical Analysis Edition, June 25, 2021

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