Q 2 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

2- Cis-trans isomerism in alkenes is due to a- free rotation about the double bond c- free rotation about single bond c- Zaitsev organization d- H-bonding b- restricted rotation about the double bond d- chiral carbon

2- Cis-trans isomerism in alkenes is due to a- free rotation about the double bond c- free rotation about single bond c- Zaitsev organization d- H-bonding b- restricted rotation about the double bond d- chiral carbon

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter12: Unsaturated Hydrocarbons

Section: Chapter Questions

Problem 12.8E

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Concept explainers

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

Question

Q 2 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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