JEE Main 2018 (Offline) | Ionic Equilibrium Question 99 | Chemistry

An aqueous solution contains an unknown concentration of Ba²⁺. When 50 mL of a 1 M solution of Na₂SO₄ is added, BaSO₄ just begins to precipitate. The final volume is 500 mL. The solubility product of BaSO₄ is 1 $$\times$$ 10^–10. What is the original concentration of Ba²⁺?

1.0 $$\times$$ 10^–10 M

5 $$\times$$ 10^–9 M

2 $$\times$$ 10^–9 M

1.1 $$\times$$ 10^–9 M

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

-1

Following four solutions are prepared by mixing different volumes of NaOH and HCl of different concentrations, pH of which one of them will be equal to 1 ?

100 mL $${M \over {10}}$$ HCl + 100 mL $${M \over {10}}$$ NaOH

75 mL $${M \over {5}}$$ HCl + 25 mL $${M \over {5}}$$ NaOH

60 mL $${M \over {10}}$$ HCl + 40 mL $${M \over {10}}$$ NaOH

55 mL $${M \over {10}}$$ HCl + 45 mL $${M \over {10}}$$ NaOH

PREVIOUS NEXT

Questions Asked from Ionic Equilibrium (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions