If 15 mL of dichloromethane was used at one time for extraction, will the amount of the substance extracted be the same as, lesser than, or greater than that if three-5 mL fractions were used? Justify your answer by showing calculations. Assume the mass of the sample to be used is 1.0 g, volume of water is 100 mL and the KD is 5

If 15 mL of dichloromethane was used at one time for extraction, will the amount of the substance extracted be the same as, lesser than, or greater than that if three-5 mL fractions were used? Justify your answer by showing calculations. Assume the mass of the sample to be used is 1.0 g, volume of water is 100 mL and the KD is 5

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter39: Preparation Of An Α, Β-unsaturated Ketone Via Michael And Aldol Condensation Reactions

Section: Chapter Questions

Problem 2Q

See similar textbooks

Similar questions

1: What is the molar concentration of a 4% solution of borax? (sodium tetraborate decahydrate, Na2B4O7·10H2O) Group of answer choices A:1.5 x 10^4 M B:65.8 M C:1.049 M D:0.1049 M 2: Calculate the approximate length of PVA strand assuming that each monomer unit contributes two carbon atom diameters to the length. (1 carbon atom diameter = 154 picometers) Group of answer choices A:5.46 x 10^7 nm B:5.46 m C:308 pm D:5.46 x 10^5 pm 3: Calculate and compare the number of strands of PVA in 1.00 L of 4% PVA and the number of tetrahydroxyborate ions in 1.00 L a 4% solution of borax. Group of answer choices A:Borax has more strands than PVA B:Borax has approx. 409 more ions than PVA strands C:PVA has approx. 409 more strands than Borax ions D:Borax has approx. 209 more ions than PVA strands
For this statement, answer True or False and explain your answer briefly. Polarity is the only characteristic used in liquid-liquid extraction to isolate a poison from the biological matrix.
if 5 mL 10 % v/v 1,6-Diaminohexane in 3% Sodium Hydroxide and 10 mL 2% v/v Sebacoyl Chloride in Hexanes is used to make nylon6,10. If each dimer is 20 angstroms in length, calculate approximately how long (in feet or miles) a strand of nylon can be formed
Which of the following statement is false? a. Component with the strong attraction to the support move more slowly than component with weak attraction. b. Chromatography technique used to separate only colored compounds. c. On TLC, single spot does not mean or guarantee a single substance (compound). d. Iodine vapor and UV- lamp are methods used for visualization uncolored compounds.
Outline the structure and functions of cellwalls, and explain the role of peptidoglycan.
Compare the column material of GC and LC in terms of the “functional groups” taking place on the column surface or on the packing material? Draw chemical structure of the active groups and classify them according to their polarities.
What is the reason for extracting the organic layer with NaOH solution? Explain and write the possible chemical reaction.
1.Write the equation or equations for preparing rayon using the ammoniated copper method, where hydrated copper sulphate or copper(II) hydroxide is used. 2.Write the equation or equations for preparing rayon using another method, if available
COMPLETE THE STATEMENT: 1. Before manufacturing process begins the sources of suitable fragrances are ______ in the manufacturing centre. 2. Oils are ______ from plants and other substances by several methods 3. During ________, flowers are spread on glass sheets coated with grease. 4. _________is the oldest and least complex method of extraction. 5. During Aging, the_____ tests whether the perfume has the specific smell or not.
In the paper chromatography experiment, the filter paper is the stationary phase and water is the mobile phase False, cellulose is the mobile phase and salt solution is the stationary phase False, adsorbed water is the stationary phase and salt solution is the mobile phase False, salt solution is the mobile phase False, adsorbed water is the mobile phase and salt solution is the stationary phase
If you had performed the extraction with dichloromethane (d 1.33 g/mL) as the organic solvent and just water as the aqueous layer, describe what is the top and bottom layer and which layer would each of the three starting compounds (benzil, benzoic acid, and alizarin) would be found in.
which of the following statements regarding purification by recrystallization is false? i. activated charcoal removes insoluble impurities. ii. water is the best recrystallization solvent for organic compounds. iii. slow cooling permits the exclusion of the solvent from the recrystallized solid. a. i, ii, and iii b. i and ii c. i only d. ii and iii