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6) Which one has the weakest conjugate base? a) CH;CH;OH b) HCECH c) NH3 d) HCI e) H;0

6) Which one has the weakest conjugate base? a) CH;CH;OH b) HCECH c) NH3 d) HCI e) H;0

Appl Of Ms Excel In Analytical Chemistry
Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter8: Polyfunctional Acids And Bases
Section: Chapter Questions
Problem 4P
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*Given the following information, answer the questions 6 and 7 Acid NH3 HC=CH pKa Acid pKa CH;CH:OH 38 16.0 25 15.7 HCL -7 6) Which one has the weakest conjugate base? a) CH;CH2OH b) HCECH c) NH3 d) HCI e) H20 7) Which of the following reactions takes place to a significant extent? NH3 + HC=C NH2 + HCECH II OH + CH;CH2OH- H,0 +CH3CH20 OH + HC=CH H2O + HCEC III Cr + H,0 HCI+ OH IV a) II and III b) I only c) IV only d) I and IV e) III only 8) What is the correct Cahn-Ingold-Prelog rankings to the following sets of substituents? a) -CH(CH3)2>- C(CH3)3> - CH-CH2>- CH;CH3 b) -CH=CH2 > - CH(CH3)2 > - C(CH;)3 > - CH2CH3 c) -CH=CH2 > - CH(CH3)2 > - CH2CH3>- C(CH3)3 d) -C(CH3);> - CH(CH3)2>- CH=CH2 > - CH2CH3 e) -C(CH3);>- CH=CH2 > - CH(CH3)2 >, - CH2CH3 9) The correct statement about diastereomers is; a) They are non-mirror image stereoisomers b) They have identical physical properties c) They have plane of symmetry d) They are constitutional isomers. e) They are interconvertable by rotation around sigma bond 10) The compound with R configuration is; NH2 CH3 CI CH2OH H. CHS CH CH2Br HO CH, NH2 CO,H Hln Hl CN HO. Br HS a
Transcribed Image Text:*Given the following information, answer the questions 6 and 7 Acid NH3 HC=CH pKa Acid pKa CH;CH:OH 38 16.0 25 15.7 HCL -7 6) Which one has the weakest conjugate base? a) CH;CH2OH b) HCECH c) NH3 d) HCI e) H20 7) Which of the following reactions takes place to a significant extent? NH3 + HC=C NH2 + HCECH II OH + CH;CH2OH- H,0 +CH3CH20 OH + HC=CH H2O + HCEC III Cr + H,0 HCI+ OH IV a) II and III b) I only c) IV only d) I and IV e) III only 8) What is the correct Cahn-Ingold-Prelog rankings to the following sets of substituents? a) -CH(CH3)2>- C(CH3)3> - CH-CH2>- CH;CH3 b) -CH=CH2 > - CH(CH3)2 > - C(CH;)3 > - CH2CH3 c) -CH=CH2 > - CH(CH3)2 > - CH2CH3>- C(CH3)3 d) -C(CH3);> - CH(CH3)2>- CH=CH2 > - CH2CH3 e) -C(CH3);>- CH=CH2 > - CH(CH3)2 >, - CH2CH3 9) The correct statement about diastereomers is; a) They are non-mirror image stereoisomers b) They have identical physical properties c) They have plane of symmetry d) They are constitutional isomers. e) They are interconvertable by rotation around sigma bond 10) The compound with R configuration is; NH2 CH3 CI CH2OH H. CHS CH CH2Br HO CH, NH2 CO,H Hln Hl CN HO. Br HS a
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