Question

C.)2.6 d.) 423 3. Calculate the concentration of a murexide solution with an absorbance of 528 at 540 nm given that a 2.75 x 10A-4 M solution has an absorbance of .487 at 540 nm a. 2.98 x 10A-4 M B.) 3.35 x 10A3 M .)9.64 x 10 A-7 d.12.54 x 10 4 4. Calculate the equilibrium constant for the reaction Fe3+ (ago+SCN (aq) FescN2+ (aq) given that the mixture of 5 ml of.00359 M SCN- and 5 ML of .00200 M Fe3+ solutions yield 1.68 x 10A- 4 M FeSCN2+ at a given temperature. a.) 23 Calculate the molarity of a NaOH solution given that 33.25 mL of NaOH solution are required titrate .802g of potassium hydrogen phthalate (KHP, molar mass is204.23 g/mol) a.) .1317 Calculate the ksp for PbCro4 given that in a saturated solution the Pb2+ ion concentration determined to be 5.35 x 10A-7 M a.) 5.35 x 10A-7 In a plot of InK (y-axis) vs 1/T (x-axis), the slope of the line obtained is 782.21 what the reaction in J/ mol/ a.) -6503 b.)-55390 c.)-94.08 dnone of the above Determine the concentration of a monoprotic acid (HA) using the potentiometric titration curve above for 25.0 mL of hA solution titrated with .100 M NaOJ solution B.) 93 d. 8.06 x 10A3 c.) 124 5. b.) .1170 C.).0239 d.) 8.543 6. d.) 2.86 x 10 A-13 b.) 1.07 x 10_-6c.) 2.67 x 10 A-7 7. 8. d.)0.072 c.) 0.139 M b.) 8 M a.) 0.100 M From the potentiometric titration curve about, the pKa of the monoprotic acid (HA) is approximately 9. a.) 3.2 10. Given the information below, with reactants and products at standard conditions, the E of the c.)8.0 b.) 4.4