The organic compound 18crown6 (see preceding problem) also binds strongly with the alkali metal ions in

Question

The organic compound 18-crown-6 (see preceding problem) also binds strongly with the alkali metal ions in

methanol: K++18-crown-6⇄[complex]+. In methanol solution, the equilibrium constant is 1.41*106.

A similar rxn with Cs+ has an equilibrium constant of only 2.75*104. A solution is made (in methanol) containing 0.020mol/L each of K+ and Cs+. It also contains 0.30mol/L of 18-crown-6. Compute the equilibrium concentrations of both the uncomplexed K+ and the uncomplexed Cs+.

aA + bB
C+ dD
Kc =
ICT’IDI
[8] [V]
Kc
Equilibrium Constants
[A]
concentration of molars A
[B]
concentration of molars B
[ C]
concentration of molars C
[D]
concentration of molars D
a,b,c,d
number…
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