A 10.00 mL portion of an aqueous K₂CrO₄ stock solution is diluted to 100.0 mL in a…
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
A 10.00 mL portion of an aqueous K₂CrO₄ stock solution is diluted to 100.0 mL in a volumetric flask. From this diluted solution, 15.00 mL is titrated with 27.35 mL of 0.0180 M AgNO₃ until all CrO₄²⁻ is precipitated as Ag₂CrO₄ according to
2 AgNO₃(aq) + K₂CrO₄(aq) ⟶ Ag₂CrO₄(s) + 2 KNO₃(aq).
Determine the molarity of the original K₂CrO₄ stock solution.