Discussion Forum

Hydrocarbon

Hydrocarbon

by Ruhul Amin (201-29-1646) -
Number of replies: 7
Picture of 23 B (MUA)

Please Can anyone explain why it's.


Stability of 

Carbocation: 3°>2°>1°(alkyle)>methyle

Carbanion: methyle> 1°>2°>3°(alkyle)


23(b)


In reply to Ruhul Amin (201-29-1646)

Re: Hydrocarbon

by Popy Rani Sutradhar -
Picture of 23 B (MUA)
because -CH3 is electron providing group. and more the number of electron providing group more stable will be carbocation. therefore 3 degree carbocation is more stable. Tertiary carbocation possess minimum positive charge due to - (1) hyper conjugation (2) electron releasing inductive effect of alkyl group
primary carbanions have only one alkyl group and the increase in electron density is less on the carbon atom. Hence it is more stable thansecondary or tertiary carbanions. ... (other atom is a more electronegative atom).
In reply to Popy Rani Sutradhar

Re: Hydrocarbon

by Mehedi Hasan Rabbi -
Picture of 23 B (MUA)
Why carbanion is more stable than carbonation?
Mehedi Hasan Rabbi
ID:201-29-1700
In reply to Mehedi Hasan Rabbi

Re: Hydrocarbon

by Sanjida ahmed Emma 201-29-1711 -
Picture of 23 B (MUA)

reactivity determined by several factors: The inductive effect. Electronegative atoms adjacent to the charge will stabilize the charge; Hybridization of the charge-bearing atom.

In reply to Mehedi Hasan Rabbi

Re: Hydrocarbon

by kamrul hasan sujon -
Picture of 23A( MUA)
carbocation is more stable. let's take for example the ter-butyl carbocation (Ch3)3-C+ this charged ion is highly stabilized due to the presence of the three donor methly groups that donate electrons, and hence largely stabilize the positive charge. On the other hand the tert-butyl carbanion (CH3)3-C- would be less stabilized and more reactive than its positive catine since The negatively charged carbon atom in carbanion is sp3 hybridized. Therefore, it has a tetrahedral structure. Three of the four sp3 hybridized orbitals form 3s-bonds with hydrogen or carbon atom of the alkyl group. The fourth sp3 hybrid orbital contains the lone pair of electrons.This would cause to bring the reactivity to this ion and makes it act as a free radicals.
ID:201-29-1686
Section :23(A)
In reply to Ruhul Amin (201-29-1646)

Re: Hydrocarbon

by Kazi Julfiker -
Picture of 23 B (MUA)
What does a hydrocarbon look like?
In reply to Kazi Julfiker

Re: Hydrocarbon

by Nusrat Jahan Fahima -
Picture of 23A( MUA)

hydrocarbon is an organic compound made of nothing more than carbons and hydrogens. ... Saturated hydrocarbons have as many hydrogen atoms as possible attached to every carbon. For carbons on the end of a molecular chain, three can be attached. For carbons in the middle of a chain or a ring, two can be attached.


ID: 201-29-1643

23(A)

In reply to Ruhul Amin (201-29-1646)

Re: Hydrocarbon

by MD. Nadim Hasan -
Picture of 23 B (MUA)

Tertiary carbocations are more stable than primary or secondary carbonation because they have three methyl groups to distribute it's positive charge rather than only one or two methyl groups. ... Of course, the more the positive charge is spread out, the more stable your carbocation will be 3 degree.


Id:201-29-1702