General Organic Chemistry

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What is the hyperconjugation effect according to Baker and Nathan?

The resonance effect between multiple bonds and single bonds

The steric hindrance in electrophilic aromatic substitution

The inductive effect in alkyl groups

The interaction between π electrons and adjacent σ bonds (correct)

What is the basis of the stability of alkyl carbocations?

Electronegativity of the alpha carbon atom

Number of resonating structures and steric hindrance

Number of alpha hydrogens and inductive effect

Number of resonating structures and number of alpha hydrogens (correct)

What is the electron-releasing power of an alkyl group dependent on?

The resonance effect between the alkyl group and the aromatic ring

The inductive effect of the alkyl group

Steric hindrance between the alkyl group and the aromatic ring

Number of hydrogens present on the alpha carbon atom (correct)

What is the consequence of hyperconjugation in alkyl benzene?

The alkyl group becomes an ortho-para directing group Signup and view all the answers

What is another name for the hyperconjugation effect?

No-bond resonance Signup and view all the answers

What is the fundamental requirement for a compound to exhibit hyperconjugation?

The compound should have at least one sp2-hybrid carbon. Signup and view all the answers

What is the effect of hyperconjugation on the heat of hydrogenation of a compound?

It decreases the heat of hydrogenation. Signup and view all the answers

What is the resulting effect of hyperconjugation on the dipole moment of a molecule?

It increases the dipole moment. Signup and view all the answers

What is the term used to describe the movement of electrons from one atom to another in multibonded atoms at the demand of an attacking reagent?

Electromeric effect Signup and view all the answers

What type of effect is represented by a curved arrow ( ) showing the shifting of an electron pair?

Electromeric effect Signup and view all the answers

What is the type of effect that occurs when the transfer of electrons takes place towards the attacking reagent?

+E effect Signup and view all the answers

What is the phenomenon of hyperconjugation observed in the system X | -C=C-C=X?

Reverse Hyperconjugation Signup and view all the answers

What is the type of effect that explains the meta directing influence and deactivating effect of CX3 group in electrophilic aromatic substitution reaction?

Hyperconjugation effect Signup and view all the answers

What determines the direction of the shift of electron pair in a multiple bond?

The type of groups linked to the multiple bond Signup and view all the answers

What is the type of effect that occurs when the transfer of electrons takes place away from the attacking reagent?

-E effect Signup and view all the answers

What is the order of preference of atoms or groups in the Cahn-Ingold-Prelog priority system based on?

The sequence rules Signup and view all the answers

What does the symbol 'E' represent in the Cahn-Ingold-Prelog system?

Atoms or groups of higher preference on opposite sides Signup and view all the answers

What happens when the order of preference of groups cannot be settled on the first atom?

The second atom or subsequent atoms in the groups are considered Signup and view all the answers

What does the symbol 'Z' represent in the Cahn-Ingold-Prelog system?

Atoms or groups of higher preference on the same side Signup and view all the answers

Why do terminal alkenes such as propene, 1-butene, and 2-methyl propene not show geometrical isomerism?

Due to the presence of a doubly bonded carbon atom Signup and view all the answers

What is the bond angle in a molecule with sp3 hybridization?

109.5° Signup and view all the answers

What is the type of hybridization present in a molecule with two π bonds and one σ bond?

sp2 Signup and view all the answers

What is the number of unused p-orbitals in a molecule with sp hybridization?

1 Signup and view all the answers

What is the relationship between the number of bond pairs and the number of atoms attached to the central atom in the electron pair method?

bp = number of atoms attached Signup and view all the answers

What is the order of s-character in decreasing order for sp, sp2, sp3, and p orbitals?

s > sp3 > sp2 > sp > p Signup and view all the answers

What is the type of effect responsible for the orienting influence of alkyl group in o, p-positions and of group in toluene?

Hyperconjugation effect Signup and view all the answers

General Organic Chemistry

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Questions and Answers

What is the hyperconjugation effect according to Baker and Nathan?

What is the basis of the stability of alkyl carbocations?

What is the electron-releasing power of an alkyl group dependent on?

What is the consequence of hyperconjugation in alkyl benzene?

What is another name for the hyperconjugation effect?

What is the fundamental requirement for a compound to exhibit hyperconjugation?

What is the effect of hyperconjugation on the heat of hydrogenation of a compound?

What is the resulting effect of hyperconjugation on the dipole moment of a molecule?

What is the term used to describe the movement of electrons from one atom to another in multibonded atoms at the demand of an attacking reagent?

What type of effect is represented by a curved arrow ( ) showing the shifting of an electron pair?

What is the type of effect that occurs when the transfer of electrons takes place towards the attacking reagent?

What is the phenomenon of hyperconjugation observed in the system X | -C=C-C=X?

What is the type of effect that explains the meta directing influence and deactivating effect of CX3 group in electrophilic aromatic substitution reaction?

What determines the direction of the shift of electron pair in a multiple bond?

What is the type of effect that occurs when the transfer of electrons takes place away from the attacking reagent?

What is the order of preference of atoms or groups in the Cahn-Ingold-Prelog priority system based on?

What does the symbol 'E' represent in the Cahn-Ingold-Prelog system?

What happens when the order of preference of groups cannot be settled on the first atom?

What does the symbol 'Z' represent in the Cahn-Ingold-Prelog system?

Why do terminal alkenes such as propene, 1-butene, and 2-methyl propene not show geometrical isomerism?

What is the bond angle in a molecule with sp3 hybridization?

What is the type of hybridization present in a molecule with two π bonds and one σ bond?

What is the number of unused p-orbitals in a molecule with sp hybridization?

What is the relationship between the number of bond pairs and the number of atoms attached to the central atom in the electron pair method?

What is the order of s-character in decreasing order for sp, sp2, sp3, and p orbitals?

What is the type of effect responsible for the orienting influence of alkyl group in o, p-positions and of group in toluene?

What type of effect occurs when the transfer of electrons takes place towards the attacking reagent?

In the system X | -C=C-C=X, what phenomenon is observed?

What determines the direction of the shift of electron pair in a multiple bond?

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