A solution contains two group-IV cations, X2+ and Y2+, each at an initial concentration of 0.1 M. H2 — AITS & Test Series Chemistry Question

Question

A solution contains two group-IV cations, X2+ and Y2+, each at an initial concentration of 0.1 M. H2S gas is passed through the solution to form a saturated solution. Given Ksp of YS = 2 × 10-27 M2 Ksp of XS = 1 × 10-27 M2 What is the minimum concentration of sulphide in [S2-1] required to begin precipitation of YS? A) 2 × 10-26 B) 10-26 C) 3.2 × 10-14 D) 0.1