JEE Main Chemistry question
To 100 mL of 0.1 M AgNO₃ solution solid K₂SO₄ is added. The concentration of K₂SO₄ that shows the precipitation is, (Ksp for Ag₂SO₄=6.4×10⁻⁵ M):
Answer: (B)
Solution
[SO₄²⁻]min=Ksp/[Ag⁺]²=6.4×10⁻⁵/0.01=6.4×10⁻³ M.
To 100 mL of 0.1 M AgNO₃ solution solid K₂SO₄ is added. The concentration of K₂SO₄ that shows the precipitation is, (Ksp for Ag₂SO₄=6.4×10⁻⁵ M):
[SO₄²⁻]min=Ksp/[Ag⁺]²=6.4×10⁻⁵/0.01=6.4×10⁻³ M.