Q 8 please - Which of the following is a force that helps to stabilize the orbitals of carbon atoms in the double bond of an alkena-hyperconjugationb- hyperphysicsc-Zaitsev organizationd-H-bonding2- Cis-trans isomerism in alkenes is due toa- free rotation about the double bondc- free rotation about single bond3- Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?a- the Aufbau principleb- the nucleophilicity of bromide aniond- the acidity of HBrc- the relative stability of carbocations4- Why alkyl halides are considered to be very reactive compounds towards nucleophile?a- they have an electrophilic carbonc- they have an electrophilic carbon & a good leaving groupd- they have a nucleophilic carbon & a good leaving group5- What is the most likely reaction for a primary halide to undergo in the presence of relatively small base/nucleophile?a-S2b- Sx1c- Eld-El and Slb- restricted rotation about the double bondd- chiral carbon6- A compound with 2 degrees of unsaturation could have_____ in it.a- all single bondsb- a double bondc- a triple bondd- a ring7- Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules?a-CH=CH₂b-C=CHc-CH(OH)CH;d- CH₂CH₂OHa- SN1b- they have an electrophilic carbon & a bad leaving group8- The reagent needed to convert 2-butyne to cis-2-butene is :a-Na/NH3b- H₂/Ptc- H₂/Lindlar's catalyst9- Arrowheads with a "half" head ("fish-hook") indicatea- Hetrolytic processb- Polar processc-homolytic process10-Inversion of configuration results from which one of the following mechanisms?b- S 2c- Eld- LiNH;d- E2d- No indication

In this we have to find out the reagent needed to convert 2-butyne into cis-2-butene.

Answered: 8- The reagent needed to convert…

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Chemistry

8- The reagent needed to convert 2-butyne to cis-2-butene is : a- Na/NH₁ b- H₂/Pt c- H₂/Lindlar's catalyst d- LiNH,

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Ethers (R-O-R’) are compounds formed by replacing hydrogen atoms of an alcohol (R-OH compound) or a phenol (C6H5OH) by an aryl/ acyl group (functional group after removing single hydrogen from an aromatic ring). In this section, reaction, preparation and behavior of ethers are discussed in the context of organic chemistry.

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An organic reaction in which an organohalide and a deprotonated alcohol forms ether is known as Williamson ether synthesis. Alexander Williamson developed the Williamson ether synthesis in 1850. The formation of ether in this synthesis is an SN2 reaction.

Question

Q 8 please

- Which of the following is a force that helps to stabilize the orbitals of carbon atoms in the double bond of an alken
a-hyperconjugation
b- hyperphysics
c-Zaitsev organization
d-H-bonding
2- Cis-trans isomerism in alkenes is due to
a- free rotation about the double bond
c- free rotation about single bond
3- Which of the following concepts explains Markovnikov's rule as applied to the addition of HBr to propene?
a- the Aufbau principle
b- the nucleophilicity of bromide anion
d- the acidity of HBr
c- the relative stability of carbocations
4- Why alkyl halides are considered to be very reactive compounds towards nucleophile?
a- they have an electrophilic carbon
c- they have an electrophilic carbon & a good leaving group
d- they have a nucleophilic carbon & a good leaving group
5- What is the most likely reaction for a primary halide to undergo in the presence of relatively small base/nucleophile?
a-S2
b- Sx1
c- El
d-El and Sl
b- restricted rotation about the double bond
d- chiral carbon
6- A compound with 2 degrees of unsaturation could have_____ in it.
a- all single bonds
b- a double bond
c- a triple bond
d- a ring
7- Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules?
a-CH=CH₂
b-C=CH
c-CH(OH)CH;
d- CH₂CH₂OH
a- SN1
b- they have an electrophilic carbon & a bad leaving group
8- The reagent needed to convert 2-butyne to cis-2-butene is :
a-Na/NH3
b- H₂/Pt
c- H₂/Lindlar's catalyst
9- Arrowheads with a "half" head ("fish-hook") indicate
a- Hetrolytic process
b- Polar process
c-homolytic process
10-Inversion of configuration results from which one of the following mechanisms?
b- S 2
c- El
d- LiNH;
d- E2
d- No indication

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