What percent of X can be extracted with 100 mL hexane? b) What will be the percent X remaining in water after extraction with four batches of 25 mL hexane? c) Using 100 mL water sample and portions of 25 mL hexane, determine the minimum number of extractions to obtain an efficiency of approximately 99 % Show solution and explanation.

What percent of X can be extracted with 100 mL hexane? b) What will be the percent X remaining in water after extraction with four batches of 25 mL hexane? c) Using 100 mL water sample and portions of 25 mL hexane, determine the minimum number of extractions to obtain an efficiency of approximately 99 % Show solution and explanation.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 49RGQ: Fluoridation of city water supplies has been practiced in the United States for several decades. It...

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A chemist wants to extract a solute from 100 mL of water using only 300 mL of ether. The distribution constant, Kp, between ether and water is 2.49. Calculate q, the fraction of solute that would remain in the water under each of the extraction conditions. The chemist performs a single extraction with 300 mL of ether. The chemist performs three extractions with 100 mL of ether. The chemist performs six extractions with 50 mL of ether.
0.376 grams of KHP are placed in an Erlenmeyer flask and some water and a drop of phenolphthalein is added to the flask. The buret is filled with an NaOH (aq) solution of unknown concentration. The NaOH solution is added dropwise to the flask containing KHP (aq). After 12.78 mLs of the NaOH(aq) solution is added, the color of the solution is found to be faintly pink. What is the concentration (M) of the unknown NaOH solution based on this data alone?
Imagine carbon dioxide (CO2) gas is generated by reacting aqueous sodium bicarbonate with aqueous acetic acid. As the gas bubbles from the surface of the solution, the gas is trapped by a large test tube which was turned upside down and the end submerged below the level of the solution. When you analyze the gas trapped in the tube, you find that it contains not only carbon dioxide but water as well. (i) Explain why water vapor is present in the gas sample in the tube. As part of your explanation, be sure to (ii) include an appropriate, labeled diagram.
Imagine carbon dioxide (CO2) gas is generated by reacting aqueous sodium bicarbonate with aqueous acetic acid. As the gas bubbles from the surface of the solution, the gas is trapped by a large test tube which was turned upside down and the end submerged below the level of the solution. When you analyze the gas trapped in the tube, you find that it contains not only carbon dioxide but water as well. (i) Explain why water vapor is present in the gas sample in the tube. Be sure to include an appropriate, labeled diagram.
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A chemist wants to extract a solute from 100 mL of water using only 300 mL of ether. The distribution constant, Kp, between ether and water is 2.49. Calculate q, the fraction of solute that would remain in the water under each of the extraction conditions. The chemist performs a single extraction with 300 mL of ether. q = The chemist performs three extractions with 100 mL of ether. q = The chemist performs six extractions with 50 mL of ether. - TOOLS x10
A sulfuric acid spill occurred on the highway after a truck containing barrels of sulfuric acid swerved out of control from a truck tire blowout. Luckily no one got hurt in the event but there is a concern that the sulfuric acid spill may affect local ground water supply. A sample of the ground water in that area was recovered to assess the extent of contamination of the ground water supply. In order to determine the concentration of sulfuric acid in the sample, 25.00 mL of the ground water sample was titrated with 0.133 M NaOH and you get the following data: Sodium hydroxide (initial buret reading) 0.66 mL Sodium hydroxide (final buret reading) 17.42 mL Calculate the molarity of sulfuric acid in the ground water sample. Enter numerical answer. Report in 3 sig figs. Show work
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