Which compound has the lowest pKa?
A. (CH3CH2O2C)2CH2
B. CH3CH2O2CCH2CHO
C. CH3CH2COCH2CHO
D. PhCOCH2COCH3
Which compound has the lowest pKa? A. (CH3CH2O2C)2CH2 B. CH3CH2O2CCH2CHO C. CH3CH2COCH2CHO D. PhCOCH2COCH3
UUT A 6. Which of the following is a B-diester? B) 0 0 A) C) - Corbin (Clell w.section 17.1 E) оо CH3OCCH2COCH 3 снҙссH2ccH3 CH3CCH2COCH3 Сн зососH 3 сн зосос 7. Which compound has the lowest pKa? A) (CH3CH2O2C)2CH2 B) CH3CH2O2CCH2CHO D) PhCOCH2COCH3 E) (NC)2CH2 Section: 17-1 C) CH3CH2COCH2CHO Section: 17-1 8. Which compound's a H is the least acidic? A) nitroethane B) propanenitrile D) propanal E) acetone C) N,N-dimethylacetamide
Please answer all. Just need A,B,C or D 2. (01') Which proton has the lowest pKa value (This is Elvitegravir an HIV drug)? На CI O2Hd A) Ha B) Hb C) Hc D) Hd 3. (Q1) Which is the major product in this reaction? 1) Sia28H-THF 2) H202, NaOH C) D) но он 4. (a1') What is the hybridization of the nitrogen atom in the following structure? NH A) sp B) sp C) sp D) sp
Which compound is the most basic? Please give pka values each compound. A B C D NH2 NH2
7) Which compound has the lowest boiling point? A) CH3CHO B) CH3CH2CHO C) CH3CH2OH D) CH3CH2CH2OH E) CH3COCHZ
8) Which compound has the lowest boiling point? A) CH3CH2OH B) CH3CH2CHO C) CH3CH2CH3 D) CH3CH2CH2OH E) CH3CH2CH2CH3
References Acids and Bases Compound a Compound b Compound c A" phenol= pka:9.89 B= pentane-2,4-dione= pka:9 C=dimethyl malonate pka=13 Which of the compounds above are strong enough acids to react almost completely with a hydroxide ion (pKa of H2O = 15.74) or with a bicarbonate ion (pKa of H2CO3 = 6.37)? Enter your answers as an alphabetized string, i.e. abc, not cba; enter none if none of the compounds are strong enough acids. Hydroxide ion: Bicarbonate ion:
organic chemistry. which of the following compounds has the lowest pka? 4. Which of the following compounds has the lowest pK? . .་ ་ ་ ་ ་ ་
4. Which of the following structures has the lowest pka? он он он HN
- Which of the following compounds has the lowest pKa? COOEt H2 OH COOET CN COOEt c. COOEt d. COOEt e. CN produtos e Pero e promene . Quomo comenon Which of the following compounds would produce a racemate when treated with base? d. a) and b) only e. all of these Осня What is the major product of the transformation below? 1. LDA, -78c 1. CHẠMgBr 2. H2O 2. PhSeBr 3. H202 iš å så
1. Which one of the following compounds is a Bronsted-Lowry base? a) CH3CO2 b) NH3 c) H2SO4 d) HCl e) CH3 2. Which compound do you expect to have the lowest pKa? a) HCl b) NH3 c) CH3CH2OH d) CH4 e) H2SO4 3. Which compound do you expect to have the lowest pKa? a) HCl b) NH3 c) CH3CH2OH d) CH4 e) H2SO4 4) What is the strongest base? a) CH3COOH b) CH3COO- c) CH3CH2OH d) CH3CH2O-