A student obtained a sample impure ASA sample. He hydrolyzedthe ASA with NaOH and heated the mixture to produce thesalicylate dianion:C6H4 (OCOCH3) (COOH) + 3OH- → C6H4 (0) (COO) + 2H₂O + CH3COONext the student then acidified the mixture with FeCl3-KCI-HCIsolution to produce the magenta complex oftetraaquosalicylatoiron (III) ion:C6H4 (0) (COO) + H3O+C6H4 (OH) (COO-) + H₂O3+C6H4 (OH) (COO) + Fe(H₂O) ³+ [C6H4 (O) (COO) Fe(H₂O)] ++ H₂O + H₂O* The complex ion is sensitive to pH, therefore the solution was buffered to pH 1.90 to avoidthe formation of di- and tri-salicylate complex of iron (III).Before the concentration could be determined through UV-Visspectroscopy, the student needs to know the wavelength of lightthat was most absorbed by the complex ion in order to set thespectrometer properly. The student calibrated the spectrometerby setting the transmittance to 100 % with FeCl3-KCI-HCI solutionas reference. The data is as follows:Wavelength(nm)580570560550540535530525520510500490Absorbance0.1190.1980.2030.2150.2200.2280.2400.2550.2470.2160.1990.073

A question based on absorption. A set of data obtained in UV-Visible spectroscopy is prescribed.…

C6H4 (OCOCH3) (COOH) + 3OH- → C6H4 (0) (COO) + 2 H₂O + CH3COO™ Next the student then acidified the mixture with FeCl3-KCI-HCI solution to produce the magenta complex of tetraaquosalicylatoiron (III) ion: C6H4 (0) (COO-) + H₂O + C6H4 (OH) (COO) + Fe (H₂O) 3+ C6H4 (OH) (COO) + H₂O [C6H4 (O) (COO) Fe(H₂O)6] + H₂O + H₂O* →

C6H4 (OCOCH3) (COOH) + 3OH- → C6H4 (0) (COO) + 2 H₂O + CH3COO™ Next the student then acidified the mixture with FeCl3-KCI-HCI solution to produce the magenta complex of tetraaquosalicylatoiron (III) ion: C6H4 (0) (COO-) + H₂O + C6H4 (OH) (COO) + Fe (H₂O) 3+ C6H4 (OH) (COO) + H₂O [C6H4 (O) (COO) Fe(H₂O)6] + H₂O + H₂O* →

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter23: Carbonyl Condensation Reactions

Section23.SE: Something Extra

Problem 35MP: Isoleucine, another of the twenty amino acids found in proteins, is metabolized by a pathway that...

See similar textbooks

Similar questions

CH Post Lab ET O 44 Is saloviglvoyig'lo wouna inenimob stotis W A+H3N-CH-C-OH F CH-CH3 CH3 5. The structure of amino acid valine (Val) is as follows: The pKa for the carboxylic acid group is 2.29; the pKa for the protonated amine group is 9.74. What is the pl value of Val?
What is the product of the following reaction? K Br Br Corone CATE Hufnahapisodbinders ni CFFICINEIN MEDICAL FATHERINE REE OPERA AIHTS 1 min to te to post F COMMER CLE HNO (2 equivalents) || = |||
4). Which of the following is the best method for preparing aspirin? II III L COOH LOCCH3 COOH Oi OCCI HO-d-CH₂- + HCOOH + CH3Cl — COOH OCCH3 IV. V. ? COOH OH COOH OH + CHC−NH, _H $8-0-80 + CH3C-0-CCH3 HO
A excess H₂O H
O O Major product of the following reaction is- Phil... O None of the above C b X OH Ph a "Br CHO Ph Ag₂O b Ph C
Provide the products for the following reactions: + + MeO2C .CO₂Me
What type(s) of catalysis is/are present in the enzymatic reaction below? SCOA H-His CH SCOA Asp CH COASH CH: CO HO-C-COO" HO-C-COO H-CH, acetyl-CeA SCOA CH, CH; CH COO COO COO oxaloacetate an intermediate citrate Select one or more: a. general acid b. general base C. metal ion d. specific base e. nucleophilic f. specific acid
Which of the following bases are strong enough to deprotonate C6H5OH(pKa = 10) so that equilibrium favors the products:(a) H2O; (b) NaOH; (c) NaNH2; (d) CH3NH2; (e) NaHCO3; (f) NaSH; (g)NaH?
edict the product of the following reaction: C Na OE+ 2) H30* ?
Isoleucine, another of the twenty amino acids found in proteins, is metabolized by a pathway that includes the following step. Propose a mechanism.
If a solution of compound X is ncubated with a catalytic anount of enzyme Y the sucrose is trarsformed to glucose aid Euctose in the reaction 1X 1 fedose3 ghacose A eqahum, The concenttons of the seation comgoests he and 2mM glucose. What is Keg? Oa, 6 Ob4 Oa 20 O'd. 5 A Moving to another question wili save this response.
4. Draw structures for products of the following reactions. PaCl, (Bu water tBu PdCI, methanol OH CHCI, NaOH, water Me,N LDA, THE, 0°C BulI (2 moles) Bri THF, -78°C Buli THE, °C Br Pd(OAch THE, 0C MeO