Add sulfate ion. Ba ion forms a solid ppt of BaSO4.
Ba^+2 + SO4^-2 ==> BaSO4
There is no reaction with iron(III).
But note this does NOT provide Ba^+2 after the pptn. However, I think the spirit of the question is for this answer.
how would you separate Fe3+ from Ba2+ in a mixture?
Please explain and give an equation for reaction.
2 answers
Ba +2 can be separated from the mixture by adding few drops of sulfuric acid. solid BaSo4 will be formed. The precipitate is separated from the solution containing Copper II ion by centrifuging, rinsied and its color verified to be white.
Ba 2 (aq)+ + SO4 2-(aq) ------- BaSO4 (S) white
Ba 2 (aq)+ + SO4 2-(aq) ------- BaSO4 (S) white