[zazjaju]

30.00 mL of .1346 M solution of barium nitrate is added to 25.00 mL of a solution containing sulfate ions. The barium sulfate precipitate is filtered and redisolved in hot water. The barium is then titrated with .1567 M EDTA. If it takes 12.66 mL of EDTA solution to reach the endpoint, what was the concentration of the sulfate in the original 25.00 mL sample?

My exam in quantitative chemistry will look very similar to these practice problems, and I would like to know how to solve this.

Please help solve and show work.

Thank you!!

[ardbeg]

first you need to know what reactions are occurring, so write balanced equations.