18. Solving a chemistry problem
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18. Solving a chemistry problem
3. The resistivity of a saturated solution of sparingly soluble salt A at 298 K is equal to ρ. The specific resistance of water at the same temperature is ρ H2O = 1 • 104 Ohm • m. Calculate: 1) the solubility of salt A in pure water; 2) the product of the solubility of substance A, assuming that the activity coefficients of ions γ± = 1 (solutions are highly diluted); 3) the solubility of substance A in a solution containing 0.01 mol of substance B; 4) the solubility of substance A in a solution containing 0.01 mol of substance C. Substances A, B, C are completely dissociated.
N option ρ • 10-4, Ohm·m Substance
A B C
6 0.0248 PbSO4 Li2SO4 KBr
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