Answer Happy

Comment on the trend of solubility of ZnS, CdS and HgS (cf.
Table 12.1 on page 103) and calculate how many liters of water it
would take to dissolve a single molecule of each compound.
Table 12.1.: Solubility constants Ksp of several halogenides, sulfates, sulfides, chromates, car- bonates and hydroxides - often used for the gravimetric determination of the respective cation - in aqueous solution. Compound Agci AgBr Agi РЬСІ, CaF2 BaF2 CaSO BaSO4 PbSO Sr SO4 Kyp | Compound Kap | Compound Kup 2 x 10-20 mol?L? | Mns 10-15 mol?L? | BaCro 1 x 10-10 molL2 5 x 10-13 molLFes 10-19 mol?LPbCr 2 x 10-14 mol?L? 8 x 10-17 mol?L? Nis 10-21 mol?L? Ag, Cro 4 x 10-12 molL3 2 x 10-6 mol Zns 10-22 mol?L? CaCO3 5 x 10-9 mol?L? 4 x 10-11 molL3PbS 10-28 mol’L2 BaCO3 2 x 10-9 mol?L? 2 x 10-6 molL3 CdS 10-28 mol?L? Mg(OH), molL3 2 x 10-5 mol?L? Cus 10-36 mol?L? Al(OH)3 10-33 mol'L 1 x 10-9 mol?L Ag, 10-50 molL3 Fe(OH)2 10-15 mol'L3 1 x 10-8 molL? Hgs 10-54 mol?LFe(OH)3 10 mol'l 3 x 10-7 mol?L? As, S3 10 -29 moll Cr(OH)3 10-30 mol'L 10-11 -38