1.1a) Butyric acid is to be extracted from 500 ml of anaqueous solution containing 4 g of butyric acidusing ether as an extractant. The distributioncoefficient of this system is 3 at 25 °C. show thatthe butyric acid extracted in a single batch with 500ml ether is less than that extracted in two batchesof 250 ml portions.b) Briefly describe different strategies that can beused to obtain a chemical separation.c) Briefly discuss why chemical separations methodsare used in analytical chemistry.

Step 1:Step 2:Different strategies for chemical separation include:Distillation: Separating…

Answered: 1.1 a) Butyric acid is to be extracted…

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter7: Extraction

Section: Chapter Questions

Problem 1Q

See similar textbooks

Similar questions

Hexanoic acid was added to an immiscible biphasic solvent system, 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 (D2) of hexanoic acid in water with respect to CCl4.
Carboxylic acids, including fatty acids and benzoic acids, are often present inboth municipal and industrial effluents. Describe a sample preparationcombined with GC method for identification and determination of carboxylicacids in raw wastewater at ppb (µg L-1) level. Point out a suitable samplepreparation technique and GC conditions in details and give justifications foryour choice
The separation and purification processes given below and the method used against them are given. Which or which of these pairings are correct? Brewing the tea - Extraction Purification of water from impurities-Chromatography Separating olive pomace from oil while olive oil is being produced - Decantation Obtaining oil fractions - Ordinary distillation Obtaining essential oils and using them in perfume making - Water-steam distillation A. I, IV, V B. I, II, III, IV, V C. I, II, V D. I, II, III, V E. I, II, III, IV
3. Carboxylic acids, including fatty acids and benzoic acids, are often present in both municipal and industrial effluents. Describe a sample preparation combined with GC method for identification and determination of carboxylic acids in raw wastewater at ppb (Hg L-1) level. Point out a suitable sample preparation technique and GC conditions in details and give justifications for your choice. `OH Heptanoic acid LOH Benzoic acid ÇH3 он H3C ČH3 4-Methylbenzoic acid 2,4-Dimethylbenzoic acid
3. To determine ethanol content in beer using Gas Chromatography (GC) - Flame Ionization Detection (FID), which of the following is the suitable internal standard? (A) Acetone (B) n-propanol (C) Propane (D) Water
(DV 20 ml. of an aqueous solution of 2 mmol butyric acid is shaken with 10 mL ether. After the layers are separated, it was found that 0.5 mmol of butyric acid remains in the aqueous layer. Calculate "D" and "%E".
Suppose you have an organic sample X that is somewhat soluble in water, even though it issomewhat more soluble in dichloromethane or ether solvents. But if you do a singleextraction, you get only 60% of your material to transfer from the water to the organic layer.How many “washes” would it take to extract over 90% of your organic material extracted fromthe water layer?
What method of separation would you use to isolate compound B from an ether solution containing a mixture of the two compounds below? OH A B Extract with base, isolate the aqueous layer, neutralize with acid, filter the precipitate and dry Extract with acid, isolate the aqueous layer, neutralize with base, filter the precipitate and dry Extract with base, isolate the organic layer, dry with magnesium sulfate, and evaporate the solvent Extract with acid, isolate the organic layer, dry with magnesium sulfate, and evaporate the solvent Extract with base, isolate the organic layer, neutralize with acid, filter the precipitate and dry Extract with acid, isolate the organic layer, neutralize with base, filter the precipitate and dry
The separation and purification processes given below and the method used against them are given. Which or which of these pairings are correct? I. Brewing of tea - ExtractionII. Purification of water impurities - ChromatographyIII. Separation of olive pomace from olive oil while producing olive oil-DecantationIV.Petroleum fractions obtaining - Ordinary distillationV. Obtaining essential oils and using them in perfume making - Water-steam distillation
Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. If there are two bold words/phrases in a number, write your answer for EACH of the bold words/phrases 1. 6-hydroxy-1-naphthoic acid is soluble in 5% NaOH and soluble in 5% NaHCO3. 2. The addition of excess charcoal would decrease the % recovery in the purification by recrystallization. 3. If the target compound is contaminated with impurity, the melting point will be higher than the theoretical value and the melting range is large.
10:29 0. O ? 86% AIATS For Two Year Medic. A 73 /180 Mark for Review The reagent required for the following conversion is CH3. C=C CH3-C = C- CH, → H CH3 Na/Liquid NH3 Zn/HCI LIAIH4 H2, Pd/C, quinoline Clear Response III
Acetophenone is soluble in diethyl ether, isopropanol, and nhexane. Identify and justify the most suitable solvent for UV- Vis characterization?

SEE MORE QUESTIONS

Recommended textbooks for you

Macroscale and Microscale Organic Experiments

Chemistry

ISBN:

9781305577190

Author:

Kenneth L. Williamson, Katherine M. Masters

Publisher:

Brooks Cole

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

EBK A SMALL SCALE APPROACH TO ORGANIC L

Chemistry

ISBN:

9781305446021

Author:

Lampman

Publisher:

CENGAGE LEARNING - CONSIGNMENT

Macroscale and Microscale Organic Experiments

Chemistry

ISBN:

9781305577190

Author:

Kenneth L. Williamson, Katherine M. Masters

Publisher:

Brooks Cole

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

EBK A SMALL SCALE APPROACH TO ORGANIC L

Chemistry

ISBN:

9781305446021

Author:

Lampman

Publisher:

CENGAGE LEARNING - CONSIGNMENT

SEE MORE TEXTBOOKS