Choose the statement below that is true for the separation of the following mixture dissolved in asolution of ethyl acetate:MeO,OMeNHCompound ACompound BSelect one:O a. B can be extracted with HCI (aq) while A remains in the organic layer.Ob. A can be extracted with HCI (aq) while B remains in the organic layer.OC B can be extracted with NaHCO (aq) while A remains in the organic layer.Od. A can be extracted with NAOH (aq) while B remains in the organic layer.Oe. A and B cannot be separated by extraction as they both have the same reactivity.8 can be extracted with NaOH (aq) while A remains in the organic layer.

Answered: Image /qna-images/answer/7cfbfb93-f8a0-4669-be26-10513c397be7.jpg

Answered: OMe MeO, NH Compound A Compound B

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter20: Applications Of Oxidation/reduction Titrations

Section: Chapter Questions

Problem 20.26QAP

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The following compounds could be separated by which one of the options for Separation of Mixtures: HN HN and Select one: O A They can't be separated O B. Distillation O C.Acid-Base Extraction with HCI(aq) O D. Recrystallization O E. Acid-Base Extraction with NaHCO3(aq)
De to: CaCO3, CaSO,Y 16, What weight of sample which contains 56.15 per cent CI was taken for analysis if the precipitated AgCl weighed 0.5017 g? Ans. 0.2210 g. B. Calculations of Volumetric Analysis
A sample may contain NaOH, NazCO3 and NaHCO3, alone or in some combination, along with inert material. A samplewitha mass of 857.6 mgwas dissolved and titrated with0.1163 M HCI. The volume of HCl used from 0 to methyl red endpoint (Phenolphthalein endpoint was not monitored here) was found to be 36.54 mL. Another 228.8 mg portion of the sample was titrated to the phenolphthalein endpoint and 10.82 mL was used up for this titration. a. What is the composition of the sample? b. Calculate the percentage of each of the component present.
Kk.100.
Distribution Coefficient - Please help write conclusions based on results provided. Thank You! Results Equiv. wt. of acetic acid - 60.052 g/mol a. Volume of base required for first titration 10.10 mL- 0.0101 L b. Mass of acetic acid in the 10 mL aliquot 0.3033 g c. Volume of base required for second titration 6.53 ml. 0.00653 L d. Mass of acid left over in water layer 0.1961 g e. Mass of acid in ethyl acetate after a single 10 mL extraction 0.1072 g 6.29 ml.- 0.00629 L f. Volume of base required for third titration 0.1889 g g. Mass of acid in water layer 0.1144 g h. Mass of acid in ethyl acetate after two 5 mL extractions Kp (single extraction) 0.55 versus Kp (double extraction) 0.61
9. An aqueous solution of sulfuric acid is prepared by mixing a secondary standard of sulfuric acid with deionized water. The aforementioned acid is to be used as a titrant hence its concentration must be accurately determined. To do this, Engr. Polinar, standardized the titrant by titrating two liters of ammonia at 0.90 atm and 30 deg C. From the experiment, 134 mL of the titrant was necessary to neutralize the ammonia. Determine the concentration of the acid in terms of normality? 10. Engr. Forcadela is optimizing a plastic formulation by manipulating the phosgene concentration injected as a gas during the reaction. To obtain credible results, he considered the propensity of phosgene to dissociate into carbon monoxide and chlorine gas at 395 deg C. Performing an experiment at the aforementioned temperature, an equilibrium is reached amongst the species where the total pressure is at 3 atm. If the equilibrium constant expression in terms of concentration for the reaction at 395 deg C…
Complete solution -Buffer Preparation-
5. A 300.0 mg sample containing Na,CO3, NaHCO3 and NaOH and inert material either alone or in some combination was dissolved and titrated with 0.1000 M HCI the titration required 24.41 mL to reach the phenolphthalein endpoint. And an additional 8.67 mL to reach the methyl red endpoint. Determine the composition of the sample and calculate the percent of each titrated component.
5. From the stock solutions of 1.00-mol L acetic acid and 1.00-mol L of sodium acetate, six solutions were prepared with the acetic acid and acetate concentrations shown in the table below. The pk of acetic acid is 4.756. [Acetic acid). [Acetate). Final volume, Solutio mol L mol L ml A. 0.10 100 0.0000351 100 0.10 0.10 100 0.010 0.010 100 0.10 0.15 100 0.15 0.10 100 -1 Determine the volume of the stock solutions of 1.00-mol Lacetic acid and 1.00-mol L of sodium acetate needed to prepare the solutions. Write your answer in the table below. a. Vol. acetic acid, ml Vol. of acetate, ml Solution A b. Calculate for the initial pH of the solutions and write the pH in the table below. Solution Initial pH A Which solution(s) have the same pH? C.
5. A 300.0 mg sample containing Na,CO3, NaHCO, and NaOH and inert material either alone or in some combination was dissolved and titrated with 0.1000 M HCI the titration required 24.41 ml to reach the phenolphthalein endpoint. And an additional 8.67 mL to reach the methyl red endpoint. Determine the composition of the sample and calculate the percent of each titrated component.
4
The pka of ethanoic acid, (CH3COOH) (0.1 M), is 2.6 at 25°C. Write the balanced chemical equation for the ionisation of CH3COOH. a. b. C. Ka = Write the expression for the equilibrium constant, Ka Complete the initial-change-equilibrium table for the species in the reaction Conc (mol L-1) CH³COOH CH³COO¯ H³O+ Initial 0.100 Change Equilibrium CH3COOH + H3O+ 0.1-x +X CH3COO- 0 OH- [CH3COOH] [CH3COO-] + 0.2 -0.1 -X H3O+ H₂O H₂O

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