Chemistry
posted by Katherine on .
I'm a bit iffy on oxidation numbers... can someone please tell me if this is correct?
Assign oxidation states to each element on both sides of the equation : KClO2>KCl+O2
Reactants
K = +1
Cl = +1
O = 2
Products
K = +1
Cl = 1
O = 0
the element being reduced is Cl and the element being oxidized is Oxygen... is that correct?

products ok.
reactants:
K is +1
O is 2 EACH for a total of 4.
Therefore, Cl must be +3 to make KClO2 zero.
K2Cr2O7
K is +1
Cr is +6 each
O is 2 each
Total + = (2*1) +(2*6) = 14
Total  = 7*2 = 14