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1st Year book, Pg618 Problem 16
Balance the following redox equations by oxidation number
a. Zn + HNO3 ---> Zn(NO3)2 + NH4NO3 + H2O
b. NaI + H2SO4 ---> H2S + I2 + Na2SO4 + H2O
c. NF3 + AlCl3 --> N2 + Cl2 + AlF3
d. H3AsO3 + NaBrO3 --> NaBr + H3AsO4