Conjugated pi Study guides, Class notes & Summaries

This document contains digitally taken, handwritten notes for the conjugated pi systems chapter. It covers topics on HOMO and LUMO structures, energy levels as well as molecule stability. Notes also cover information dienes, their nomenclature as well as their properties. Thoroughly explained subtopics include 1,2 and 1,4 addition, pericyclic reactions, Diel’s - Alder reaction as well as sigmatropic, Cope and Cleissen rearrangements. Notes show mechanism thoroughly and include explanation as n...

Org II (Hamann) Chapter 17 HW – Pi Systems Name 1 Draw the structures of the following compounds a) cyclopentadiene (explain why the numbers for the double bonds (1,3-), which are formally require d, are usually omitted. I.e., why is only one isomer possible; why not 1,2- or 1,4-cyclopentadiene? 1,2-cyclopentadiene would contain an allene, a linear C=C=C unit that would make the ring too strained. 1,4- cyclopentadiene would actually be the same molecule, but numbered incorrectly. Hence the use...

This document is a summary of the conjugated pi systems chapter of the organic chemistry 2 course. It is digitally taken, handwritten notes. It covers topics on HOMO and LUMO structures, energy levels as well as molecule stability. Notes also cover information dienes, their nomenclature as well as their properties. Thoroughly explained subtopics include 1,2 and 1,4 addition, pericyclic reactions, Diel’s - Alder reaction as well as sigmatropic, Cope and Cleissen rearrangements. Notes show mecha...

Chapter 3 -- Alkenes and Alkynes MULTIPLE CHOICE 1. Which of the following dienes can be classified as conjugated? A) CH3CH=C=CH2 B) CH3CH=CHCH=CH2 C) CH2=CHCH2CH=CH2 D) CH3CH=CHCH2CH2CH=CH2 E) CH2=C=CH2 ANS: B TOP: Alkenes and Alkynes: Nomenclature and Structure 2. Which of the following molecular formulas could not represent an alkene? A) C5H10 B) C7H14 C) C10H20 D) C27H56 E) C31H62 ANS: D TOP: Alkenes and Alkynes: Nomenclature and Structure 3. What...

What are the four rules for writing resonance structures? Correct Answer 1. Atoms must not be moved. Only electrons. 2. All resonance atoms must lie in the same plane. 3. Only valid Lewis structures are allowed. 4 . The number of unpaired electrons must remain constant. What are the two conditions for resonance? Correct Answer 1. An atom must have a P orbital or a lone pair of electrons. 2. It must be single bonded to an atom that has a double or triple bond. The latter comprom...

What are the four rules for writing resonance structures? Correct Answer 1. Atoms must not be moved. Only electrons. 2. All resonance atoms must lie in the same plane. 3. Only valid Lewis structures are allowed. 4 . The number of unpaired electrons must remain constant. What are the two conditions for resonance? Correct Answer 1. An atom must have a P orbital or a lone pair of electrons. 2. It must be single bonded to an atom that has a double or triple bond. The latter comprom...

(Solution) Indiana MPJE Review 2020 Part 1, Indiana MPJE Review 2020 Part 2, Indiana MPJE Review 2020 Part 3, Indiana MPJE Review 2020 Part 4 Which federal act discusses adulteration and misbranding of drugs? Food Drug and Cosmetic Act T/F Adulteration/Misbranding can occur with both a drug and a device. True T/F A drug must be contaminated to be considered adulterated. F - if held under unsanitary conditions where it MAYA have been contaminated A container that contains a drug is made ...

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. - answer-nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus - answer-the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) n...

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. - answer-nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus - answer-the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) n...