. A solution contains an unknow concentration of Ba^2+
A solution contains an unknow concentration of Ba2+. When 50 ml of a 1M solution of Na2SO4 is added, BaSO4 just begins to precipitate. The final volume is 500 ml. The solubility product of BaSO4 is 1×10-10. What is the original concentration of Ba2+?
Correct Answer is : D.1.1×10-9M