An aqueous solution, initially 2.50 × 10-2 M in iodine (I,), is shaken with an equal volume of an immiscible organic solvent, CS2. The iodine distributes itself between the aqueous and CS, layers, and when equilibrium is reached at 25°C, the concentration of I2 in the aqueous layer is 4.16 × 10-5 M. Calculate the partition coefficient K at 25°C for the reaction I(aq) 2 L(CS2)

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter14: Chemical Equilibrium
Section: Chapter Questions
Problem 72P
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An aqueous solution, initially 2.50 × 10-2 M in iodine (I,),
is shaken with an equal volume of an immiscible organic
solvent, CS2. The iodine distributes itself between the
aqueous and CS, layers, and when equilibrium is reached
at 25°C, the concentration of I2 in the aqueous layer is
4.16 × 10-5 M. Calculate the partition coefficient K at
25°C for the reaction
I(aq) 2 L(CS2)
Transcribed Image Text:An aqueous solution, initially 2.50 × 10-2 M in iodine (I,), is shaken with an equal volume of an immiscible organic solvent, CS2. The iodine distributes itself between the aqueous and CS, layers, and when equilibrium is reached at 25°C, the concentration of I2 in the aqueous layer is 4.16 × 10-5 M. Calculate the partition coefficient K at 25°C for the reaction I(aq) 2 L(CS2)
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