52. Solving a chemistry problem

52. Solving a chemistry problem

7. For the titration of 25 cm3 of a solution of FeSO4 in sulfuric acid, 31.25 cm3 of a 0.1 N solution of potassium dichromate was used. How much water must be added to 200 cm3 of iron salt solution to make the solution exactly 0.05 N?

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