Iodine is sparingly soluble in water but much more so in carbon tetrachloride. The equilibrium constant, also called the partition coefficient, for the distribution of I, between these two phases I2(aq) =12(CCI4) is 83 at 20°C. (a) A student adds 0.028 L of CCI4 to 0.213 L of an aqueous solution containing 0.037 g Iz. The mixture is shaken and the two phases are then allowed to separate. Calculate the fraction of I2 remaining in the aqueous phase. 49) 8.396 x (b) The student now repeats the extraction of I2 with another 0.028 L 40.0002608 Cl4. Calculate the fraction of I2 from the original solution that remains in the aqueous phase. (c) Compare the result in (b) with a single extraction using 0.056 L of CCI4. Comment on the difference. After a single extraction using 0.056 L of CC4, the fraction of I, that remains in the aqueous phase is 49 4.3 x . This result is larger Vy than the result in (b), which means that a single large extraction is not as efficient as vy two separate smaller extractions.

Iodine is sparingly soluble in water but much more so in carbon tetrachloride. The equilibrium constant, also called the partition coefficient, for the distribution of I, between these two phases I2(aq) =12(CCI4) is 83 at 20°C. (a) A student adds 0.028 L of CCI4 to 0.213 L of an aqueous solution containing 0.037 g Iz. The mixture is shaken and the two phases are then allowed to separate. Calculate the fraction of I2 remaining in the aqueous phase. 49) 8.396 x (b) The student now repeats the extraction of I2 with another 0.028 L 40.0002608 Cl4. Calculate the fraction of I2 from the original solution that remains in the aqueous phase. (c) Compare the result in (b) with a single extraction using 0.056 L of CCI4. Comment on the difference. After a single extraction using 0.056 L of CC4, the fraction of I, that remains in the aqueous phase is 49 4.3 x . This result is larger Vy than the result in (b), which means that a single large extraction is not as efficient as vy two separate smaller extractions.

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter21: Rates Of Chemical Reactions, Ii. A Clock Reaction

Section: Chapter Questions

Problem 2ASA

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