Daily Question: [Corrosion and Protection] 2011-06-13 (Monday)
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This post was last edited by Litaotao1314 on 2011-6-14 at 19:18. Daily question: [Corrosion and Protection] 2011-06-13 (Monday). After a household iron wok used for cooking is washed and left aside, red-brown rust spots appear on it. Which chemical reaction does not occur during this process? A. 4Fe(OH)2 + 2H2O + O2 = 4Fe(OH)3↓ B. 2Fe + 2H2O + O2 = 2Fe(OH)2↓ C. 2H2O + O2 + 4e– = 4OH– D. Fe – 3e– = Fe3+. Please give your support; those who participate will receive rewards； 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
Reply 1# eastchen D
Reply 1# eastchen C. 2H2O+O2+4e―＝４OH－ D. Fe－3e―＝Fe3+
Reply 1# eastchen c
Reply 1# eastchen D
Reply 1# eastchen D. Fe－3e―＝Fe3+
D. Fe－3e―＝Fe3+
B. 2Fe + 2H2O + O2 = 2Fe(OH)2↓