It is determined that the equilibrium concentrations of F e3+, SCN¯ and [F e SCN2+] are 4.20 x 10-4 M (4.20 times 10 to the minus 4th power M), 4.80 x 10 M (4.80 times 10 to the minus 4th 4 power M) and 1.20 x 10-4 M (1.20 times 10 to the minus 4th power M) respectively. What is the value of K.? No units, please. Your Answer:

One more: H2 + I2 <----> 2HI. If K=50, what is the equilibrium concentration of HI if the initial concentration of HI is 0.10?

Consider a solution of 0.0500 M HF (K, = 7.20 x 10 *) for nos. 25 - 28. Determine the following: M 25. equilibrium molar concentration of H;O 26. equilibriun molar concentration of HE 27 pOH 28.%ionization

Fe3+ + SCN- <---> FeNCS2+  Given that Keq= 299, the initial concentration of Fe3+ is 0.04 M, and the initial concentration of SCN- is 0.001 M, calculate the final concentrations of each species in the reaction at equilibrium.

Paragraph Styles 24. Define a) chiral chromatography. b) adsorption chromatography. 25. Explain the difference between gel filtration and gel permeation. 27. Indicate the order in which the following compounds would be eluted from an HPLC column containing a reversed-phase packing: (a) benzene, diethyl ether, n-hexane. (b) acetone, dichloroethane, acetamide. 28. Describe the fundamental difference between ion-exchange and size-exclusion chromatography. 29. What types of species can be separated by HPLC but not by GC? 30. Compare the advantages of HPLC and GC instruments. 32. Briefly describe or define (a) oxidation. (b) reduction (c) reducing agent. (d) oxidizing agent. (e) salt bridge. glish (United States) W DELL

9. For the reaction Hg²+ (aq) + 4 I- (aq) → [HgI4]²+ (aq) the value of Kc = 1.0 × 1030. If the initial concentration of I- is 0.78 M and Hg2+ is 0.010 M, what will be the equilibrium concentrations of Hg²+?

In the RICE table started for calculating equilibrium concentrations of the reaction ML (ap) M² (aq) +4L(ag), the terms in the "change" column are R I C E ML 0.10 M a) -x, +x+x b) +x, -x, +4x Oc) -x-x. +4x d) -x-x-x Oe) -x, +x, +4x [M²+] 0.32 M [L] 0.00 M

in the fictitious reaction below, the equilibrium concentration of A is 0.6542 M, B is 0.6439 M, and A 28 3 is 0.6068 M. What is the value of the equilbrium constant k o for this reaction? 2A (a) + 3B (ac) < A 28 3 1.702 0.1883 1.441 0.1477 5.311

For the base

calc . the equilibruim concebtration if k = 1.2 x 10^-5