Solid zinc chloride is slowly added to 150 mL of a 0.326 M potassium sulfide solution until the concentration of zinc ion is 0.0577 M. The percent of sulfide ion remaining in solution is

Question

Solid zinc chloride is slowly added to 150 mL of a 0.326 M potassium sulfide solution until the concentration of zinc ion is 0.0577 M. The percent of sulfide ion remaining in solution is