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![[Post New]](/templates/default/images/icon_minipost_new.gif) 20 Dec 2006 13:09:12 IST
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How to solve this type of question? The oxidant(s) whose oxidizing power is affected with the change in pH is/are ? A] I2 B] Cr2O4- C] MnO4- D] NO3-
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Jatinpreet Singh
LOOKING FOR COLLEGE |
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21 Dec 2006 13:26:09 IST
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no replies yet
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Jatinpreet Singh
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22 Dec 2006 20:41:17 IST
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Still waiting !!!!!!!!!!!!!!!!!!!!
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Jatinpreet Singh
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22 Dec 2006 23:14:15 IST
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THE ANSWER IS IODINE.
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23 Dec 2006 10:43:01 IST
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How? can U explain a little .........
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Jatinpreet Singh
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30 Dec 2006 15:24:12 IST
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answer to the question is IODINE Cr2O4- OXIDATION STATE OF Cr=+3 MnO4- OXIDATION STATE OF Mn=+7 NO3- OXIDATION STATE OF N=+5 NOW THE ABOVE ELEMENTS CAN GET REDUCED (accept electrons to reach their normal configuration) AS THEY ARE AT MAXIMUM OXIDATION STATE OXIDATION STATE OF I2=0 ( I2 is iodine) I2 CAN GAIN 2 ELECTRONS TO FORM 2I- , .PRESENCE OF I- IN THE SOLUTION INTERFERES WITH THE H[+] CONCENTRATION THEREBY BRINGING A CHANGE IN pH
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The yardstick of human intelligence is the ability to overcome the last fallacy |
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31 Dec 2006 17:56:46 IST
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Thanks alot . U deserve a salute.
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Jatinpreet Singh
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31 Dec 2006 18:38:48 IST
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well sorry as far as chromium is being concerned its max oxidation state is 6
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31 Dec 2006 20:17:48 IST
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smartgoels i accept that +6 is the highest o.n for Cr.But for Cr to bring a change in pH you would require a very good oxidising agent to reach from +3 to+6.In presence H[+] that cannot be achieved
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