ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
2nd Edition
ISBN: 9780393664034
Author: KARTY
Publisher: NORTON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 15, Problem 15.34P
Interpretation Introduction
Interpretation:
Color dependence of the given structures of phenolphthalein under various pH conditions is to be explained.
Concept introduction:
If absorption takes place in the UV region, human eyes do not register any wavelength as human eyes are able to detect the absorption only in the visible region.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Select one: True or False
1- In case of homo-binuclear covalent bond (of atoms of the same element) and hetero-binuclear covalent bond of very low electronegativity difference (as that between carbon and hydrogen), the bond is very strong and of no or minimum polarity hence not cleaves in water
2-In this compound complexation ( in the image ) is used for qualitative/quantitative identification of phenolic compounds where salicylic acid is chelated by the iron metal in ferric chloride to form water soluble violet color complex
3-Complexes are of different stability some are stable only in aqueous other are stable in both solid and solution however, for the maximum complex stability high metal anaionic charge, small transient metal atom radius and occupied d orbital are required.
What is the predominant form of cyclohexylamine at pH 9.5? Approximately what fraction is in this form?
According to the Evan's pKa table, phenol has a pKa of 9.95. p-Nitro and m-nitrophenol have pKas of 7.14 and 8.35 respectively. Using resonance structures, explain the observed trends in the acidity of these molecules.
Chapter 15 Solutions
ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Prob. 15.4PCh. 15 - Prob. 15.5PCh. 15 - Prob. 15.6PCh. 15 - Prob. 15.7PCh. 15 - Prob. 15.8PCh. 15 - Prob. 15.9PCh. 15 - Prob. 15.10P
Ch. 15 - Prob. 15.11PCh. 15 - Prob. 15.12PCh. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Prob. 15.16PCh. 15 - Prob. 15.17PCh. 15 - Prob. 15.18PCh. 15 - Prob. 15.19PCh. 15 - Prob. 15.20PCh. 15 - Prob. 15.21PCh. 15 - Prob. 15.22PCh. 15 - Prob. 15.23PCh. 15 - Prob. 15.24PCh. 15 - Prob. 15.25PCh. 15 - Prob. 15.26PCh. 15 - Prob. 15.27PCh. 15 - Prob. 15.28PCh. 15 - Prob. 15.29PCh. 15 - Prob. 15.30PCh. 15 - Prob. 15.31PCh. 15 - Prob. 15.32PCh. 15 - Prob. 15.33PCh. 15 - Prob. 15.34PCh. 15 - Prob. 15.35PCh. 15 - Prob. 15.36PCh. 15 - Prob. 15.37PCh. 15 - Prob. 15.38PCh. 15 - Prob. 15.39PCh. 15 - Prob. 15.40PCh. 15 - Prob. 15.41PCh. 15 - Prob. 15.42PCh. 15 - Prob. 15.43PCh. 15 - Prob. 15.44PCh. 15 - Prob. 15.45PCh. 15 - Prob. 15.46PCh. 15 - Prob. 15.47PCh. 15 - Prob. 15.48PCh. 15 - Prob. 15.49PCh. 15 - Prob. 15.50PCh. 15 - Prob. 15.51PCh. 15 - Prob. 15.52PCh. 15 - Prob. 15.53PCh. 15 - Prob. 15.54PCh. 15 - Prob. 15.55PCh. 15 - Prob. 15.56PCh. 15 - Prob. 15.57PCh. 15 - Prob. 15.58PCh. 15 - Prob. 15.59PCh. 15 - Prob. 15.60PCh. 15 - Prob. 15.61PCh. 15 - Prob. 15.62PCh. 15 - Prob. 15.63PCh. 15 - Prob. 15.64PCh. 15 - Prob. 15.65PCh. 15 - Prob. 15.66PCh. 15 - Prob. 15.67PCh. 15 - Prob. 15.68PCh. 15 - Prob. 15.1YTCh. 15 - Prob. 15.2YTCh. 15 - Prob. 15.3YTCh. 15 - Prob. 15.4YTCh. 15 - Prob. 15.5YTCh. 15 - Prob. 15.6YTCh. 15 - Prob. 15.7YTCh. 15 - Prob. 15.8YTCh. 15 - Prob. 15.9YTCh. 15 - Prob. 15.10YTCh. 15 - Prob. 15.11YTCh. 15 - Prob. 15.12YTCh. 15 - Prob. 15.13YTCh. 15 - Prob. 15.14YTCh. 15 - Prob. 15.15YTCh. 15 - Prob. 15.16YTCh. 15 - Prob. 15.17YTCh. 15 - Prob. 15.18YTCh. 15 - Prob. 15.19YTCh. 15 - Prob. 15.20YTCh. 15 - Prob. 15.21YTCh. 15 - Prob. 15.22YTCh. 15 - Prob. 15.23YTCh. 15 - Prob. 15.24YTCh. 15 - Prob. 15.25YTCh. 15 - Prob. 15.26YTCh. 15 - Prob. 15.27YTCh. 15 - Prob. 15.28YTCh. 15 - Prob. 15.29YTCh. 15 - Prob. 15.30YT
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Suppose you have a mixture of these three compounds. Devise a chemical procedure based on their relative acidity or basicity to separate and isolate each in pure form.arrow_forwardPLEASE HELP: SEE PHOTO Explain why or why not the following mixture can be separated by acid/baseextraction.arrow_forwardE. TESTS FOR PHENOLIC COMPOUNDSPhenolic compounds such as phenol, salicylic acid, etc., give characteristiccolors with FeCl3 and Millon’s Reagent.1. Ferric Chloride TestAdd 5 drops of FeCl3 solution to 4 different test tubes containing 1 mL each ofdilute solutions of the following compounds and note the color obtained.a. Phenol _______________________________________________________________b. Salicyclic acid ___________________________________________________________c. Resorcinol _______________________________________________________________d. Picric acid _______________________________________________________________2. Millon’s TestPrepare another set of 4 test tubes containing 1 mL each of the solutions listedbelow. Add 3 drops of Millon’s reagent to each and place all the test tubes in aboiling water bath. Note the color formed.a. Phenol _______________________________________________________________b. Salicylic acid ___________________________________________________________c.…arrow_forward
- Phenols are less acidic than carboxylic acids, with values of pKa around 10. Phenols aredeprotonated by (and therefore soluble in) solutions of sodium hydroxide but not by solutions of sodium bicarbonate. Explain how you would use extractions to isolate the three purecompounds from a mixture of p-cresol (p-methylphenol), cyclohexanone, and benzoic acid.arrow_forwardSHOW COMPLETE SOLUTIONS Q3. Which isolate has A260/280 ratio of above 2.0?arrow_forwardif the pKa value for p-nitrophenol is 7.08, what fraction of it exists in its ionized form at (a) pH 7, and (b) pH 9?arrow_forward
- Taking Ka for acidic acid as 1.8 x 10-5, calculate H3O+ , using the known concentraions of acidic acid and soudium acecate contained in reaction mixtures 1 and 4. Reaction mixture time (s) Acidic acid concentration (mol/L) sodium acetate concentration (mol/L) calculated H3O+ concentration 1 237 0 1 x 10 -5 4 236 1 x 10 -4 1 x 10 -5arrow_forwardcalculate the percentage of ethylenediamine in the predominant form at pH 6.043, pKb1 of ethylenediamine is 4.072 and pKb2 is 7.152 please answer in percentagearrow_forwardexplain in great detail why the pKa values are what they are and compare them among the three compounds. The conjugate acids that are protonated are drawn in red for each compound. Which one based on the pKa is most acidic and what does that tell you about how basic their lone pairs are?arrow_forward
- a. For this acid-base reaction: C⊖H3 + H3O+ −−→ CH4 + H2O, the conjugate acid of carboanion (C⊖H3) is _________________ b. Complete the equation: HC≡N + NaOH −−→ ___________+__________ c. Rank the acidity of these: NH3, HF, H2O, HCl, NaH Most acidic______>_______>_______>_______>_______least acidic d. The Ka of acetic acid (found in vinega) is 1.8×10-5. Then the pKa of formic acid isarrow_forwardPlease show mechanims and explain the procedure for the following image.arrow_forwardwhat is the general charge on a Sialic acid at pH=7? please provide calculation and structure.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningMacroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole