Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020ChemistryIonic EquilibriumPractice

In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains A g + and P b 2 + at a concentration of 0.10 M. Aqueous HCl is added to this solution until the C l - concentration is 0.10 M. What will the concentration of A g + and P b 2 + be at equilibrium? ( K s p for AgCl = 1.8 × 1 0 - 10 , K s p for P b C l 2 = 1.7 × 1 0 - 5 )

Options

  1. A[ A g + ] = 1.8 × 1 0 - 7 M , [ P b 2 + ] = 1.7 × 1 0 - 6 M
  2. B[ A g + ] = 1.8 × 1 0 - 11 M , [ P b 2 + ] = 8.5 × 1 0 - 5 M
  3. C[ A g + ] = 1.8 × 1 0 - 9 M , [ P b 2 + ] = 1.7 × 1 0 - 3 M
  4. D[ A g + ] = 1.8 × 1 0 - 11 M , [ P b 2 + ] = 1.7 × 1 0 - 4 M

Correct answer

C. [ A g + ] = 1.8 × 1 0 - 9 M , [ P b 2 + ] = 1.7 × 1 0 - 3 M

Step-by-step solution

K s p [ A g C l ] = [ A g + ] [ C l - ] [ A g + ] = 1.8 × 1 0 - 10 1 0 - 1 = 1.8 × 1 0 - 9 M K sp PbCl 2 = Pb 2 + Cl − 2 [ P b 2 + ] = 1.7 × 1 0 - 5 1 0 - 1 × 1 0 - 1 = 1.7 × 1 0 - 3 M

Practice Ionic Equilibrium on Quantrex Academy →

More from Ionic Equilibrium

What amount of NaOH should be dissolved in a 500 mL solution, so that the p ^ H of solution is 12 at 298 K ? 2026Which of the following buffer solutions is used for precipitation of cations of the III A group? 2026The degree of dissociation of weak acid is directly proportional to 2026Which from the following is Lewis base? 2026The solubility of Fe(OH) ₃ is x mole per liter. Find its K_ sp . 2026The Basic buffer solution is made with 0.1 M NH ₄ OH and 0.2 M NH ₄ Cl . If K_b for the base is 1.8 10⁻⁵ , what is the pH of the buffer? 2026The hydrogen ion concentration of the ocean is about 2 10⁻⁹ M . What is the pOH of ocean? 2026Calculate the dissociation constant of a weak monobasic acid if it is 0.04% dissociated in a 0.01M solution. 2026 Full Ionic Equilibrium list All NTA Abhyas NEET PYQs