EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
expand_more
expand_more
format_list_bulleted
Question
Chapter 5.3, Problem 19E
Interpretation Introduction
Interpretation:
The consequences of acidifying the basic extract with only 2-naphthol (12) to pH 10 needs to be explained.
Concept Introduction :
Extraction is defined as a method used to isolate a substance which is mixed with some other substance. It is done by adding a solvent in which one the substance which needs to be extracted is soluble and other substance is insoluble.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
At pH 11 the phenol deprotonates, Why is the pka now 10, give relationship between pka and pH during deprotonation
5. Give the definition of the inductive effect. What is the reason for its appearance in the
molecule? Show the effect of the inductive effect in molecules: bromoethane CH3CH3B1;
ethanol CH3CH2OH; fluoroethane CH3CH2F.
What factor affects the ‘strength’ of a buffer?
Why was benzoic acid used as a solvent when making up the glucose stock standard solution?
Chapter 5 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 5.3 - Prob. 1ECh. 5.3 - Prob. 2ECh. 5.3 - Prob. 3ECh. 5.3 - Prob. 4ECh. 5.3 - Prob. 5ECh. 5.3 - Prob. 6ECh. 5.3 - Prob. 7ECh. 5.3 - Prob. 8ECh. 5.3 - Prob. 9ECh. 5.3 - Prob. 10E
Ch. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Prob. 13ECh. 5.3 - Prob. 14ECh. 5.3 - Prob. 15ECh. 5.3 - Prob. 16ECh. 5.3 - Prob. 17ECh. 5.3 - Prob. 18ECh. 5.3 - Prob. 19ECh. 5.3 - Prob. 20ECh. 5.3 - Prob. 21ECh. 5.3 - Prob. 22ECh. 5.4 - Prob. 1ECh. 5.4 - Prob. 2ECh. 5.4 - Prob. 3ECh. 5.4 - Prob. 4ECh. 5.4 - Prob. 5ECh. 5.4 - Prob. 6ECh. 5.4 - Prob. 7ECh. 5.4 - Prob. 8ECh. 5.4 - Prob. 9ECh. 5.4 - Prob. 10ECh. 5.4 - Prob. 11ECh. 5.4 - Prob. 12E
Knowledge Booster
Similar questions
- What is the effect of adding DNOC?arrow_forwardIf you wish to extract aqueous acetic acid into hexane, is it more effective to adjust the aqueous phase to pH 3 or pH 8? Explainarrow_forward3. You performed an experiment in order to determine the quantitative analysis of total aldehyde content in 5 g of Lemon oil. During the titration step, you used 2 mL of 0.5 N KOH. Calculate the total aldehyde content of the oil over citral (MW citral : 152, f 0.5 N KOH = 1, MW KOH: 56.1, MW HCL: 36.5)arrow_forward
- What is the purpose of this experiment? To analyze the purity of salicylic acid after the recrystallization method of purification.arrow_forwardA mixture is made up of low molecular weight carboxylic acid, alcohol and ester. What one step procedure can you use to extract the ester component from the mixture? Describe the process brieflyarrow_forwardExplain why different results are observed when HCl and H2SO4 are added to brine?arrow_forward
- how to Distinguish AgNO3 from Ba(NO3)2 and how to distinguish NaCl from NaI if they were in a test tube without being labeledarrow_forwardIn what proportions should acetic acid of 80%, 70% and 50% be mixed to create a 60% concentration of acetic acid?arrow_forwardA purified protein is in a HEPES (N-(2-hydroxyethyl)piperazine-N-(2-ethanesulfonic acid)) buffer at pH 7 with 600 mM NaCl. A 1 mL sample of the protein solution is placed in a tube made of dialysis membrane and dialyzed against 2.0 L of the same HEPES buffer with 0 mM NaCl. Small molecules and ions, such as Na, Cl, and HEPES, can diffuse across the dialysis membrane, but the protein cannot. Once the dialysis has come to equilibrium, what is the concentration of NaCl in the protein sample? Assume no volume changes occur in the sample during the dialysis. [NaCI] = mM If the original 1 mL sample were dialyzed twice, successively, against 200 mL of the same HEPES buffer with 0 mM NaCl, what would be the final NaCl concentration in the sample? [NACI] = mMarrow_forward
- Tom, an analytical chemist, bought a bag of decaffeinated coffee from a grocery store. However,Tom suspected that he might have received regular coffee and therefore decided to analyze hiscoffee for caffeine. In the lab, he took 0.5 mL of the brewed coffee and diluted it in water tomake a 100.0 mL solution. He performed four analyses and found the concentrations to be 4.69,3.99, 4.12, and 4.50 mg/L, respectively. (Assume the density of all solutions is 1.000 g/mL,1oz= 28.35 mL).(a) Report the concentration (in mg/L) of caffeine in the brewed coffee using the format asaverage ± standard deviation. (Note this is not the concentration in the diluted solution.)(b) Look up the caffeine content of regular vs. decaffeinated coffee. Do you think that Tom wasgiven the wrong type of coffee?(c) Caffeine intake of 300 mg per day reportedly has no adverse effects in the vast majority ofthe adult population. If Tom drinks 3 cups (8 oz/cup) of this coffee daily, is his intake withinthis known safe…arrow_forwardYou need to control the pH of a solution at 4.5 You have solid citric acid (pKa1= 3.13, pKa2=4.76, pKa3=6.39) and ammonium hydroxide solution. How do you proceed?arrow_forward5. Write the equation for assay of acetylsalicylic acid. Give the value of stoichiometric coefficient, formulas for the calculation of titre and percentage..arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT