Daily Question: [Corrosion and Protection] 2011-06-27 (Monday)
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Daily Question: [Corrosion and Protection] June 27, 2011 (Monday) When an iron rod and a graphite rod are connected by a wire and then immersed in a 0.01 mol·L‑1 salt solution, what phenomenon might occur? A. OH‑ ions are generated near the iron rod. B. The iron rod gets corroded. C. Cl2 is released from the graphite rod. D. O2 is released from the graphite rod. 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 sending it. 3) The answer is as follows: B. The iron rod is corroded
A. OH‑ is generated near the iron rod
B. When metal and graphite are used as electrodes, the metal acts as the negative electrode and is corroded; at the negative electrode, the reaction is Fe – 2e = Fe2+. At the positive electrode, the reaction is 2H2O + O2 + 4e = 4OH-.
Reply 1# eastchen B
Reply 1# eastchen B. Is the iron rod corroded?
When an iron rod and a graphite rod are connected by a wire and then immersed in a 0.01 mol·L‑1 salt solution, what might happen? A. OH‑ ions are produced near the iron rod. B. The iron rod gets corroded. C. Cl2 is released from the graphite rod. D. O2 is released from the graphite rod