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- Thioglycolic acid, HSCH2CO2H, a substance used in depilatory agents (hair removers) has pKa = 3.42. What is the percent dissociation of thioglycolic acid in a buffer solution at pH = 3.0?16) The best classification for the following compound is: O 0 A) aldehyde B) ester C) ketone D) carboxylic acid 17) The name of the following compound: A) phenyl ethanoate B) phenyl propanoate C) propyl benzoate D) butyl benzoate 18) Complete the following reaction: CH3COOC₂H5 + NaOH- A) CH3COCH 3 B) CH3COCH₂CH3 C) CH3COONa D) CH3COOCH₂ من + HOC₂H5.Question 9 The reagent which converts a carbonyl group of a ketone into a enamine group is O CH3CH2CH2NHCH3; H CH3CH2CH2NH2; H* O CH3CH2CH2NHCH3; H3O* O CH3CH2CH2NH2; OH OLIAIH[OC(CH3)3]3
- What product forms when the compound below is treated with Benedict's reagent? CHO H -C-OH CH,OH A) ÇH,OH H –Ç–OH CH,OH B) СНО C=0 CH,OH C) ÇOOH Н—С—ОН CH,OH D) ÇH,OH Но—ҫ—ОН CH,OH MacBook AirGive the IUPAC name for the following carboxylic acid. Cl 101 R O 2,4-dichloropentanoic acid O 2,4-dichloropentanal O 1,3-dichloropentanoic acid O 2,4-dichloro-1-pentanol fs 5 T 40 () 6 Y & CH3-CH-CH₂-CH-C-OH 7 4+ 8 CI hp 10 ▶11 O O f11 U f12 لاWhich of the following structures and IUPAC names are incorrectly matched? * oe (A) Methyleyclohexanoate (В) `NH2 Br 4-Bromo-3-chlorohexanamide 2-Ethoxypentane (D) HOOC HOOC 3,5-Nonanedioic acid В A D
- Explain why phenol (C6H50H) is substantially more acidic than methanol (CH3OH), but benzoic acid (C6H5CO2H) is not much more acidic than acetic acid (CH3CO2H). Нас — ОН ОН H3C- ОН OH pKa = 15.5 pKa = 10.0 pk = 4.75 pk = 4.2Draw the product formed when phenylacetaldehyde (CsH;CH,CHO) is treated with each reagent. Phenylacetaldehyde is partly responsible for the fragrance of the flowers of the plumeria tree, which is native to the tropical and subtropical Americas. e. Ph;P=CHCH3 f. (CH),CHNH2, mild acid g. (CH,CH)NH, mild acid h. CH,CH,OH (еxсess), H' а. NaBHa, CH,Oн b. [1] LIAIH4; (2] H20 c. [1] CH;MgBr; [2] H2O i. NH, mild acid d. NaCN, HCI j. HOCH,CH;OH, H*Which of the following reactions are correct? Explain the answer. + H₂O + H₂O H₂SO4 H OH H OH