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- Benzoic acid (C6H5CO2H) is a weak acid with a dissociation constant. Ka = 6.4 x 10-5 mol/dm3 at 250C. What happens when: Hydrogen chloride gas is bubbled through an aqueous solution of benzoic acid? An aqueous solution of sodium benzoate mixed with an aqueous solution of benzoic acid.Consider the following data. For the acid: HA- Ka = 7.46⋅10−87.46⋅10-8 Calculate the Kb for A2-. Report your answer in scientific notation using 3 sig figs.A student determines that the value of Ka for H2SO3 = 2.3×10-2 . What is the value of pKa?
- Hexanoic acid was added to an immiscible biphasic solvent sysem, water and CCl4 at 20.0OC and the equilibrium concentrations of hexanoic acid were determined to be 3.66 g/L in H2O and 67.0 g/L in CCl4. Caluclate the distrubution coeffiecent (D1) of hexanoic acid in CCl4 with respect to water.What is the basis for the separation of different compounds by ion ex-change?Consider a saturated solution of barium iodate in 0.025 M BaCl2. For the salt: Ba(IO3)2(s) ⇌ Ba2+ + 2IO3- Ksp = 1.57 \times× 10-9 at 25 deg C What is the activity coefficient of Ba2+? Consider a saturated solution of barium iodate in 0.025 M BaCl2. For the salt: Ba(IO3)2(s) ⇌ Ba2+ + 2IO3- Ksp = 1.57 × 10-9 at 25 deg C What is the activity coefficient of Ba2+?. 0.439 0.364 0.276 0.405
- Distinguish the terms end point and equivalence point.Arsenic acid dissociates to form dihydrogen arsenate and hydronium ion. Arsenic acid has Ka of 5.5 x 10-3. a.) Write the equation for dissociation of arsenic acid. Express your answer as a chemical equation. Identify all of the phases in your answer. b.) What is the dissociation constant expression for arsenic acid? (solve like this: K = [ ] [ ] / [ ] )A 5.3 × 10-2 M solution is to be used to prepare a series of five 100 mL solutions of varying concentration for use in creating a calibration curve for a spectrophotometric experiment. Determine the concentrations of each of the five dilutions if 10 mL aliquots of the current solution is used for V1.