Q. 15 What is the minimum concentration of SO42- required to precipitate BaSO4 in a solution containing 1.0 × 10-4 mole of Ba2+ ? Ksp for BaSO4 = 4 × 10-10. 1. 4 × 10-10 M 2. 2 × 10-7 M 3. 4 × 10-6 M 4. 2 × 10-3 M

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Physical Chemistry> pls help solve this qn...

Q. 15 What is the minimum concentration of SO₄^2- required to precipitate BaSO₄ in a solution containing
1.0 × 10^-4 mole of Ba²⁺ ? K_sp for BaSO₄ = 4 × 10^-10.

1. 4 × 10^-10 M

2. 2 × 10^-7 M

3. 4 × 10^-6 M

4. 2 × 10^-3 M

himaan singh , 16 Years ago

Grade 12

1 Answers

Prasanjeet Mohanty Mohanty

BaSO4 dissociates according to the following equation:

BaSO4---Ba2+ +SO42-.

as the concentration of barium ion is given, using the relation Ksp= [Ba2+]*[SO42-] we can find the concentration of SO42-

Hence the answer is 4*10-10/1*10-4=4*10-6

Last Activity: 16 Years ago

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Physical Chemistry> pls help solve this qn...

Q. 15 What is the minimum concentration of SO42- required to precipitate BaSO4 in a solution containing 1.0 × 10-4 mole of Ba2+ ? Ksp for BaSO4 = 4 × 10-10. 1. 4 × 10-10 M 2. 2 × 10-7 M 3. 4 × 10-6 M 4. 2 × 10-3 M

himaan singh , 16 Years ago

Prasanjeet Mohanty Mohanty

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Q. 15 What is the minimum concentration of SO₄^2- required to precipitate BaSO₄ in a solution containing
1.0 × 10^-4 mole of Ba²⁺ ? K_sp for BaSO₄ = 4 × 10^-10.

1. 4 × 10^-10 M

2. 2 × 10^-7 M

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electrolysis