If Ksp for HgSO4 is 6.4 × 10-5, then solubility of this substance in mole per m3 is
8
6.4 × 10-5
8 × 10-6
none of these
Ksp = s2 s = Ksp = 6.4×10-5
s = 8 × 10-3 s = 8 mol/m3