How to calculate oxidation number of hno3 July 8, 2019 16 32 64 128 How to calculate oxidation number of nitrogen in hno3 Hno3 + h2o Hno3 + h2so4 Hno3 + naoh How to find oxidation number in equation Hno3 + ca(oh)2 → ca(no3)2 + h2o