When lead sulphate is added to an aqueous solution of sodium iodide, the fclioWing equilibrium is obtained. PbSO(s) + 21 (aq) Pbl2(s) + So, (aq)- The equilibrium constant for this reaction may be determined by adding an excess of lead sulphate to a known volume of a standard solution of sodium iodide and allowing the mixture to equilibrate in a water bath, thermostatically controlled at ihe desired temperature. Cold water is then added to the reaction mixture to "freeze" the equilibrium and the mixture is then titrated with standard silver nitrate solution. In a typical experiment using 50 cm of 0.1M sodium iodide a titre of 31.0 cm of 0.1M silver nitrate was obtained.

When lead sulphate is added to an aqueous solution of sodium iodide, the fclioWing equilibrium is obtained. PbSO(s) + 21 (aq) Pbl2(s) + So, (aq)- The equilibrium constant for this reaction may be determined by adding an excess of lead sulphate to a known volume of a standard solution of sodium iodide and allowing the mixture to equilibrate in a water bath, thermostatically controlled at ihe desired temperature. Cold water is then added to the reaction mixture to "freeze" the equilibrium and the mixture is then titrated with standard silver nitrate solution. In a typical experiment using 50 cm of 0.1M sodium iodide a titre of 31.0 cm of 0.1M silver nitrate was obtained.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter9: Aqueous Solutions And Chemical Equilibria

Section: Chapter Questions

Problem 9.13QAP

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