Your question: Which alcohol is most stable?

The tertiary carbocation formed during dehydration of 2-methyl-2-propanol is most stable.

Are primary alcohols more stable?

Hence considering both electronic and steric factors, primary alkoxides are the most stable and tertiary alkoxides are the least stable, so primary alcohols are the most acidic and tertiary alcohols are the least acidic.

Which alcohols are most reactive?

Explanation: Tertiary alcohols have greater reactivity with hydrogen halides than secondary alcohols — which in turn have greater reactivity than primary alcohols — in reactions forming alkyl halides. For tertiary alcohols, the reaction proceeds by an S N1 mechanism which prefers a more substituted alcohol.

What is the order of stability of alcohols?

The order of reactivity of alcohols is 3° > 2° > 1° methyl. The order of reactivity of the hydrogen halides is HI > HBr > HCl (HF is generally unreactive).

Why 3 degree alcohol is most reactive?

The tertiary alcohol is more reactive than other alcohols because of the presence of the increased number of alkyl groups. These alkyl group increases the +I effect in the alcohol.

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Which is the most resistant alcohol towards oxidation reaction among the following?

Tertiary alcohols (R3COH) are resistant to oxidation because the carbon atom that carries the OH group does not have a hydrogen atom attached but is instead bonded to other carbon atoms.

Is ethyl alcohol a primary alcohol?

Primary Alcohols

Primary alcohols are those alcohols where the carbon atom of the hydroxyl group (OH) is attached to only one single alkyl group. Some examples of these primary alcohols include Methanol (propanol), ethanol, etc.

Is OH a good leaving group?

Alcohols have hydroxyl groups (OH) which are not good leaving groups. … Because good leaving groups are weak bases, and the hydroxide ion (HO–) is a strong base.

Which is a tertiary alcohol?

Definition. A tertiary alcohol is a compound in which a hydroxy group, ‒OH, is attached to a saturated carbon atom which has three other carbon atoms attached to it.

Which alcohol is most reactive for dehydrogenation?

Since the carbocation is most stable in the case of tertiary alcohols, the rate of dehydration is highest for tertiary alcohols in comparison to secondary and primary alcohols.

Why HI is more reactive than HBr?

More easily the bond is cleaved, more easy is the release of H+ ion, more acidic is the compound. So in this case, H—I has greater bond length than H—Br (due to greater size of I than Br) so it is easy to cleave H—I bond which makes HI more acidic than HBr.

Is primary alcohol the most acidic?

In Alcohols primary alcohols are more acidic as compared to secondary alcohols which are more acidic as compared to tertiary alcohols. This is due to the weaker alkoxide ion which is due to the presence of $C{H_3}$ groups.

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Which is more acidic alcohol?

Therefore, in the gas-phase, t-butanol is the most acidic alcohol, more acidic than isopropanol, followed by ethanol and methanol. In the gas phase, water is much less acidic than methanol, which is consistent with the difference in polarizibility between a proton and a methyl group.

Why are tertiary alcohols not oxidized?

Tertiary alcohols (R3COH) are resistant to oxidation because the carbon atom that carries the OH group does not have a hydrogen atom attached but is instead bonded to other carbon atoms. … The carbon-to-hydrogen bonding is easily broken under oxidative conditions, but carbon-to-carbon bonds are not.

Why is alcohol reactive?

The functional group of the alcohols is the hydroxyl group, –OH. Consequently, the covalent bonds of this functional group are polarized so that oxygen is electron rich and both carbon and hydrogen are electrophilic. …

Why do tertiary alcohols dehydrate easily?

Tertiary forms of alcohol are easiest to dehydrate as the carbocations are more stable and thus easier to form compared to primary and secondary carbocations.