Chemistry Practice Problems Calculate Oxidation Number Practice Problems Solution: Give the oxidation number of phosphorus in each of...

Solution: Give the oxidation number of phosphorus in each of the following:H2P2O7 2− 

Problem

Give the oxidation number of phosphorus in each of the following:

H2P2O7 2− 

Solution

Oxidation state or oxidation number is a number assigned to an element in a compound that represents the number of electrons lost or gained by that element.


These are the guidelines in determining the oxidation number of H2P2O72−:

•  Hydrogen, when bonded to non-metals has an oxidation state of (+1)

•  Oxygen, when not a peroxide or superoxide has an oxidation state of (-2)

•  For ions, the oxidation number is equal to the charge


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