How is potassium dichomate formed? Show with the help of valencies

Question

anonymous · Answer

K2Cr2O7  the oxidation state of Cr is +6  [O]=-2 and K=+1  since Chromate CrO4 ^2-  you can get to you arrival many different ways.  Do you know redox yet because thats the simpliest way other than that, you would need to know step wise mechanisms and MO theory to derive a "good' theoretical  formation of Cr2O7(-2)

anonymous · Answer

attachment

anonymous · Answer

potassium isnt bonding to Oxygen its mearly a "tight ion pair" if you want to call it that, its actually just stabilizing the - charge until further reaction. I havent studied much about this reaction but i would say mix 2CrO4 in some type of hydrolysis and you may yeild CrO7(2-) typically a deprotonation then SN2 protonation then H2O will leave yeilding CrO7(2-)