38. The organic compound 18-crown-6 (see preceding prob- lem) also binds strongly with the alkali metal ions in methanol. K* + 18-crown-6#[complex]* In methanol solution the equilibrium constant is 1.41 x 10. A similar reaction with Cst has an equilibrium con- stant of only 2.75 x 104. A solution is made (in methanol) containing 0.020 mol L each of K* and Cs*. It also contains 0.30 mol L' of 18-crown-6. Compute the equi- librium concentrations of both the uncomplexed K* and the uncomplexed Cs*.

13a.

[References) In an experiment to determine solubility product, a student examined the solubility behavior of M(IO3)2. For two trials at 25 °C, he found the following ion concentrations for his equilibrium solutions: [103] Solution 1 3.74 x 103 3.3 x 10-3 Solution 2 1.48 x 10-2 2.06 x 10-3 Write the equilibrium reaction for the dissolution of M(IO3)2 and be sure that you include (s), (aq), etc.: Calculate the Ksp for each Solution and then report the average Ksp- Solution1 Ksp = Solution 2 Ksp = Average Ksp =

MISSED THIS? Read Seca CO H,O (0.125-z) 102 16.8 (Pages 701 - 710) 16.9. atch KCV 16.8, IWE Solving for z gives CO = 0.125 - x Consider the reaction CO (g) + H20 (g) = CO2 (g) + H2 (g) K. = 102 at 500 K Part B What will be the equilibrium concentration of H2O? A reaction mixture initially contains 0.125 M CO and 0.125 M H20. Express the concentration in molarity to two significant figures. M H2O] = !! Submit Request Answer Part C Complete previous part(s) Part D Complete previous part(3)

Express the equilibrium constant for the following reaction. 2 NH 3(3) = N2g) + 3H2(g) N2][H2]1/3 K = [NH 3]1/2 [NH 316 K N21H219 [NH 312 K = [N2][H2]3 K = [NH3]2 [NH 311/2 K = [N2][H2]l/3