Daily Question: [Corrosion and Protection] 2011-07-13 (Wednesday)

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This post was last edited by eastchen on 2011-7-13 08:27. Daily question: [Corrosion and Protection] 2011-07-13 (Wednesday). Using Pt as the electrode, electrolyze the solutions contained in two beakers – one containing 200 mL of file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-29049.png KCl solution, and the other containing file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-25698.png and file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-27163.png as well as file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-7490.png. Stop the electrolysis when file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-22468.png (under standard conditions) and file:///C:/DOCUME~1/ADMINI~1/LOCALS~1/Temp/ksohtml/wps_clip_image-2445.png are produced. Remove the electrodes and mix the two solutions together; the pH of the mixture (assuming the total volume after mixing is 500 mL) is A. 1.4 B. 5.6 C. 7 D. 12.6. 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: C