Daily Question: [Corrosion and Protection] 2011-07-18 (Monday)
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Daily Question: [Corrosion and Protection] 2011-07-18 (Monday). Which of the following descriptions of experimental phenomena is incorrect? A. When a copper sheet and an iron sheet are placed close together and immersed in dilute sulfuric acid, bubbles appear on the surface of the copper sheet. B. When zinc is used as the anode and iron as the cathode to electrolyze zinc chloride solution, a layer of zinc forms on the surface of the iron sheet. C. When a zinc sheet is inserted into ferric chloride solution, a layer of iron may form on its surface. D. When an iron sheet is placed in a test tube containing hydrochloric acid and a few drops of zinc chloride solution are added, the rate at which bubbles are produced increases. 1) Please give your support; all participants will receive a reward； P 2) Please hide your reply answers; the method to do this is: http://bbs.hcbbs.com/thread-492556-1-1.html. Do not edit your reply after posting it. 3) The answer is as follows: D. When the iron sheet is placed in a test tube containing hydrochloric acid and a few drops of zinc chloride solution are added, the rate at which bubbles are produced increases
The following description of the experimental phenomenon is incorrect (C)
D. Place the iron sheet in a test tube containing hydrochloric acid, add a few drops of zinc chloride solution, and the rate at which bubbles are released increases
Reply 1# eastchen C
C. When a zinc sheet is inserted into an iron(III) chloride solution, a layer of iron may form on the surface of the zinc sheet
Reply 1# eastchen B C
Reply 1# eastchen C: When a zinc sheet is inserted into an iron(III) chloride solution, a layer of iron may form on the surface of the zinc sheet