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JEE Main Chemistry Class 11 Equilibrium Questions Part 1 Questions

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Question : 20

Total: 100

An aqueous solution contains an unknown concentration of Ba2+. When 50mL 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+?

5×10−9M
2×10−9M
1.1×10−9M
1.0×10−10M

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