The tertiary carbocation formed during dehydration of 2-methyl-2-propanol is most stable.
Which alcohol is most stable?
Tert-butanol loses an −OH group to give most stable carbonium ion. The positive charge on carbon atom is stabilized by +I inductive effect of 3 methyl groups.
Which of the following is more stable carbocation?
3o carbocation i.e., (CH3)3C+ is the most stable carbocation.
Which is the most stable cation?
(CH3)3C+3∘ carbonium ion is most stable.
Which of the following gives the most stable carbocation on dehydration?
Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. 3∘ alcohols Me-Me∣C⊕-Me is most stable carbocation.
Which alcohol will be most reactive for dehydration?
Tertiary alcohol > secondary alcohol > primary alcohol. Electron attracting group present in alcohols increase the reactivity for dehydration. Greater is the -I effect of the group present in alcohol, more will be its reactivity.
Why is 3 alcohol more 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.
Which of following formula is most stable?
CH3-C≡+O: is the most stable as the octet of each atom is complete.
What makes a Carbocation stable?
Carbocations Are Stabilized By Neighboring Carbon-Carbon Multiple Bonds. Carbocations adjacent to another carbon-carbon double or triple bond have special stability because overlap between the empty p orbital of the carbocation with the p orbitals of the π bond allows for charge to be shared between multiple atoms.
Which is more stable CH3CH2+ or ch3ch2ch2+?
both are primary but. the former one has a bulkier alkyl group and hence more inductive effect. and the latter one has more no of alpha hydrogen and hence more no of hyperconjugative structures..
Which is the most stable carbocation time?
Therefore CH3⊕CH2 is the most stable carbocation from among the given carbocations.
Which is most stable alkene?
Tetra-substituted alkene is the most stable followed by tri-substituted and di-substituted and then mono-substituted. – Alkenes that have a higher number of alkylated carbon atoms are more stable due to +R (resonance of a positive charge) effect.
How do you compare the rate of dehydration?
1 Answer. The rate of dehydration is related to the ease of formation of the carbocation and the energy of the carbocation intermediate. The ease of formation of carbocation is tertiary>secondary>primary. That is the ease of abstraction of OH2+ COULD BE be R>Q/S>P.
What is acidic dehydration of alcohol?
Alcohol upon reaction with protic acids tends to lose a molecule of water to form alkenes. These reactions are known as dehydrogenation or dehydration of alcohols. It is an example of an elimination reaction.
Which of the following alcohol is given for dehydration?
From the given alcohol, IV is a tertiary alcohol and III is a secondary alcohol. Therefore, these alcohols exhibit the most ease of dehydration of the given substances, with IV more so than III.