Electrophile Study guides, Class notes & Summaries
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AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2022 *JUN227404201* IB/M/Jun22/E7 7404/2 For Examiner’s Use Question Mark 1
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AQA 
AS 
CHEMISTRY 
7404/2 
Paper 2 Organic and Physical Chemistry 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E7 7404/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
Section B 
TOTAL 
Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
• the Periodic Table/Data Sheet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions...
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BIO 101 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS What makes the "head" of a phospholipid hydrophilic? A) The even distribution of electrons across the fatty acids makes the head polar. B) The uneven distribution of electrons across the fatty ac
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BIO 101 EXAM QUESTIONS AND 
CORRECT DETAILED ANSWERS 
What makes the "head" of a phospholipid hydrophilic? 
A) The even distribution of electrons across the fatty acids makes 
the head polar. 
B) The uneven distribution of electrons across the fatty acids 
makes the head polar. 
C) The phosphate group carries a negative charge, making the 
head polar. 
D) The phosphate group carries a negative charge, making the 
head nonpolar - ANSWER C 
Which would most likely pass unaided through a pla...
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BYUI Bio 180 exam 2 (100% correct and graded A+)
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Isomers - Answer-Two different molecules that have the same chemical formula 
structural isomers - Answer-Differ in arrangement of atoms. 
Stereoisomers - Answer-Compounds with the same structural formula but with a different 
arrangement of the atoms in space. 
Enantiomers - Answer-isomers that are mirror images of each other 
diastomers - Answer-stereoisomers that are not mirror images 
functional groups (8) - Answer-Alkyl, Hydroxyl, Carbonyl, Carboxyl, Amino, Sulfhydryl, Phosphate, 
Amide 
Al...
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Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution.
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Chem 210 Exam 3 Questions and Correct Answers, With Complete Solution. 
 
what face of the pi bond can EAR occur from? 
either face 
how many products do EARs on an alkene form? 
4 stereoisomeric products 
Brainpower 
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in a substitution rxn, what does H-O act as? 
nucleophile and replaces LG 
in an elimination rxn, what does H-O acts as? 
base and abstracts BH atom 
what is a requirement for elimination rxns? 
beta hydrogen 
what is a requirement for substitution rxns? 
leaving group 
...
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CHEM 230 Final Exam Questions With Complete Solution
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IR Spectra correct answer: -Absorption of radiation causes vibrational excitation of functional groups *making it easy to ID functional groups* 
 
*0-5000cm-1* 
 
H NMR Spectra correct answer: *0-12ppm* 
 
C NMR Spectra correct answer: *0-200ppm* 
 
Mass Spec correct answer: -Used to measure the molecular weight (mass) of the compound. 
 
Alkyne Reactions correct answer: *1* Alkyne + H2/Pd &C = Alkene 
*2* Alkyne + H2/Lindlav Cat.= Cis Alkene 
*3* Alkyne + Li or Na/Liquid NH3= Trans Alkene ...
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Chem 210 Exam 3 Questions & Answers(GRADED A+)
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what factors explain the outcomes of reactions? - ANSWERhybridization, delocalization, eN, atom density 
 
what is a leaving group? - ANSWER- group of atom(s) that can be stable on its own 
- eN atoms that are good LG also make strong acids 
 
what is the α carbon? - ANSWERC directly attached to leaving group 
 
what are β Cs? β Hs? - ANSWERβC: C(s) attached to α carbon 
βH: H(s) attached to βC 
 
what is a LB? is it a nucleophile or electrophile? - ANSWERlewis base, nucleophile 
 
what i...
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Chem 210 Exam 3 Questions & Answers(Rated A+)
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Chem 210 Exam 3 Questions & Answers(Rated A+) 
 
 
what factors explain the outcomes of reactions? - ANSWERhybridization, delocalization, eN, atom density 
 
what is a leaving group? - ANSWER- group of atom(s) that can be stable on its own 
- eN atoms that are good LG also make strong acids 
 
what is the α carbon? - ANSWERC directly attached to leaving group 
 
what are β Cs? β Hs? - ANSWERβC: C(s) attached to α carbon 
βH: H(s) attached to βC 
 
what is a LB? is it a nucleophile or elec...
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exam 2 aromatics / rxn ALL SOLUTION LATEST EDITION 2024 LATEST UPDATE AID GRADE A+
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best to prepare m-choroaniline from benzene? 
HNO2/H2SO4; Cl2/AlCl3; SN/HCl; HO- 
best to prepare p-chlorotoluene in high yield? 
start with p-aminotoluene; NaNO2/HCl, 0C; CuCl 
best to prepare m-dibromobenzene from benzene? 
nitrate; brominate; Sn/HCl; NaNO2; 0 C; CuBr 
electrophilic aromatic substitution Nitro ? N Group, Nitrogen 
M-director, destabilized META, less than ortho, para 
electrophilic aromatic substitution -NHCOCH3 ? 
Activator, o-p director 
reaction with Bromine substituent ? Br...
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Chem 210 Exam 3 Questions & Answers(Rated A)
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what factors explain the outcomes of reactions? - ANSWERhybridization, delocalization, eN, atom density 
 
what is a leaving group? - ANSWER- group of atom(s) that can be stable on its own 
- eN atoms that are good LG also make strong acids 
 
what is the α carbon? - ANSWERC directly attached to leaving group 
 
what are β Cs? β Hs? - ANSWERβC: C(s) attached to α carbon 
βH: H(s) attached to βC 
 
what is a LB? is it a nucleophile or electrophile? - ANSWERlewis base, nucleophile 
 
what i...
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Chem 210 Exam 3 questions and answers
- Exam (elaborations) • 11 pages • 2023
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what factors explain the outcomes of reactions? 
hybridization, delocalization, eN, atom density 
 
 
 
what is a leaving group? 
- group of atom(s) that can be stable on its own 
- eN atoms that are good LG also make strong acids 
 
 
 
what is the α carbon? 
C directly attached to leaving group 
 
 
 
what are β Cs? β Hs? 
βC: C(s) attached to α carbon 
βH: H(s) attached to βC 
 
 
 
what is a LB? is it a nucleophile or electrophile? 
lewis base, nucleophile 
 
 
 
what is nucleophilic ...
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