NCERT Exercise 6.73 - Equilibrium
Question: H2S-saturated 0.1 M HCl has [S2-] = 1.0 x 10^-19 M. On mixing 10 mL with 5 mL of 0.04 M FeSO4, MnCl2, ZnCl2 or CdCl2, which precipitates?
Answer: Only CdS precipitates (in the CdCl2 solution).
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