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.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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For the system: 2 HI(g) = H2(g) + I2(g), at 445°C, the value for K. is 0.020. A mixture of H2, I2, and HI in a vessel at 445°C has the following concentrations: [HI] = 2.0 mol/L, [H½] = 0.50 mol/L and [I,] = 0.10 mol/L %3D %3D Which one of the following statements about Q, is TRUE for the above system? Qc = Kc; the system is at equilibrium %3D Qc is less than K; so more H2 & I2 will form Qc is greater than Kc; more H2 and I2 will form Qc is less than Ke; more HI will form
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