20 " mL of " `(M)/(60)` `KBrO_3` was added to a sample of `SeO_3^(2-)`, The bromine evolved
Channel: Doubtnut
Date: 2020-07-12

20 " mL of " `(M)/(60)` `KBrO_3` was added to a sample of `SeO_3^(2-)`, The bromine evolved was removed and the excess of `KBrO_3` was titrated with 5.1 " mL of " `(M)/(25)` solution of `NaAsO_2`. Calculate the amound of `SeO_3^(2-)` and balance the equation.  `SeO_3^(2-)+BrO_3^(ɵ)+H^(o+)toSeO_4^(2-)Br_2+H_2O`  `BrO_3^(ɵ)+AsO_2^(ɵ)+H_2OtoBr^(ɵ)+AsO_4^(3-)+H^(o+)`  `(Br=80, K=39, As=75, Se=79)`