The solubility product of PbS in 4.2 × 10-28 at 300 K. The sulphide ions concentration required to precipitate PbS from a solution containing 0.001 M of lead ion is :(a) ≥ 2.1 × 10-14 mol/dm3(b) ≥ 4.2 × 10-14 mol/dm3(c) ≥ 4.2 × 10-25 mol/dm3(d) ≤ 4.2 × 10-28 mol/dm3

The solubility product of PbS in 4.2 × 10-28 at 300 K. The sulphide i

1.	The solubility product of PbS in 4.2 × 10-28 at 300 K. The sulphide ions concentration required to precipitate PbS from a solution containing 0.001 M of lead ion is :(a) ≥ 2.1 × 10-14 mol/dm3(b) ≥ 4.2 × 10-14 mol/dm3(c) ≥ 4.2 × 10-25 mol/dm3(d) ≤ 4.2 × 10-28 mol/dm3
Answer» Option : (c) ≥ 4.2 × 10^-25mol/dm³