If you have potassium chromate in 5% sol'n, how do you turn it into dichrimate?
Huh? This entire thread
makes absolutely no sense. Where does the formate come into it?Aqua-regia - 19-7-2015 at 01:08
pls choose other topic instead organic chemistry. this is an absolutelly beginning topic
acidify your yellow solution to get dichromate ions.(orange colour)
2CrO4 2- +2H+ = Cr2O7 2- +H2O
[Edited on 19-7-2015 by Aqua-regia]far2g0n3 - 19-7-2015 at 05:50
Thanks for the reply. I read that acidify made a mixture if di and mono chromate but I didn't get his much was to be used. Aqua-regia - 19-7-2015 at 07:42
Ok, if you are beginner (are you) need to know, cromate and mainly dichromate are very nasty chemicals. In Europe is strong recommended not, or
forbidden to use dicromate in high school education. aga - 19-7-2015 at 11:55
Chromates aren't for Beginners really, whereas this thread is.
Chromates will kill you if you have no respect for them, or you'll pour them down the drain or in a field where they'll kill something else.
Acidifying Potassium Chromate will oxidise it to the Dichromate.
Personally i reduced potassium dichromate to chromate for some titration or other (ethanol ?) which turned out to be a totally pointless exercise, as
the dichromate would have been fine in a basic solution.
What do you need yours for ?j_sum1 - 19-7-2015 at 14:45
