Question

1)
0.3396 g sample of pure 96.4% Na2SO4 reacts quantitatively with 37.70 mL of a solution of barium chloride. The reaction is: Ba^+2 (aq) + SO4^-2 (ac) → BaSO4 (s)

Calculate the molar concentration of barium ion in the solution.

2) Can a primary standard arsenic (III) ion solution be prepared from As2O3? Justify your answer.

Answer 1