Chemistry

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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?

  • Chemistry -

    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

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