1. Calculate the equivalent mass of potassium bromate in the net reaction: 3As3+ +BrO− +9H O→3H AsO +Br− +9H+ (Br=80amu)
2. What is the equivalent mass of arsenous oxide in the following reaction?
As2O3 +2I2 +2H2O→As2O5 +4HI
3. As an oxidizing agent, hydrogen peroxide is reduced to water.
H2O2 +2H+ +2e− →2H2O
How many grams of H2O2 constitute one gram milli-equivalent H2O2?
4. Na2S2O3,5H2Ocanbeoxidizedtotetrathionateions: 2SO2− →SO2− +2e−