An aqueous solution contains 010 M of Cu2 and 010 M Co2 Whic

An aqueous solution contains 0.10 M of Cu2+ and 0.10 M Co2+. Which of the following is closest to the maximum concentration of OH ions necessary to add to the solution in order to selectively precipitate out which metal ion, leaving the other ion in solution

Solution

Cu and Co require 2 OH ions each to form their respective oxides . So 0.2 miles of OH is to be added to remove one of the metal ions completely from solution