Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Concept explainers

Alkanes and Cycloalkanes
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- 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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Transcribed Image Text:- 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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