Question:
The correct order of the ease of dehydration of the following alcohols by the action of conc. H2SO4 is:
The correct order of the ease of dehydration of the following alcohols by the action of conc. H2SO4 is:
Show Hint
The stability of carbocations increases with the number of alkyl groups attached to the central carbon. Tertiary carbocations are the most stable and lead to the fastest dehydration.
Updated On: Jan 13, 2026
(CH3)3C – OH > (CH3)2CH – OH > CH3CH2 – OH
(CH3)2CH – OH > CH3CH2 – OH > (CH3)3C – OH
CH3CH2 – OH > (CH3)2CH – OH > (CH3)3C – OH
(CH3)2CH – OH > (CH3)3C – OH > CH3CH2 – OH
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The ease of dehydration is based on the stability of the carbocation formed during the reaction. Tertiary alcohols (like (CH3)3C – OH
undergo dehydration the most easily due to the formation of a stable tertiary carbocation.
Was this answer helpful?
0
0
Top Questions on Organic Chemistry
- An organic compound (A) on catalytic hydrogenation with \( \mathrm{H_2/Pt} \) gives tetralin, and on oxidation with hot alkaline \( \mathrm{KMnO_4} \) followed by acidification gives phthalic acid. Identify compound (A).
- JEE Main - 2026
- Chemistry
- Organic Chemistry
- \(\mathrm{C_6H_{12}O_3}\) gives positive iodoform test. On hydrolysis with dilute acid, the product formed gives both Tollens' test and iodoform test. Find the correct structure of \(\mathrm{C_6H_{12}O_3}\).
- JEE Main - 2026
- Chemistry
- Organic Chemistry
- The reactivity of the following compounds on the basis of the \( \mathrm{S_N1} \) mechanism is
- JEE Main - 2026
- Chemistry
- Organic Chemistry
- Which of the following is the correct order of nucleophilic nature for the following reaction? \[ \text{CH}_3\text{Br} + \text{Nu}^- \longrightarrow \text{CH}_3\text{Nu} + \text{Br}^- \]
- JEE Main - 2026
- Chemistry
- Organic Chemistry
- Which of the following is the correct order of reactivity of the given nucleophiles when treated with \( \text{CH}_3\text{Br} \) in methanol? \[ \text{F}^-,\ \text{I}^-,\ \text{C}_2\text{H}_5\text{O}^-,\ \text{C}_6\text{H}_5\text{O}^- \]
- JEE Main - 2026
- Chemistry
- Organic Chemistry
View More Questions
Questions Asked in CBSE CLASS XII exam
- “The political power or kingship was rarely dependent on birth as Kshatriyas but also open to anyone who could muster support and resources.” Explain the statement with the examples from sixth century BCE onwards.
- CBSE CLASS XII - 2025
- Kinship, Caste and Class
- The distance of an object from the first focal point of a biconvex lens is \( X_1 \) and distance of the image from second focal point is \( X_2 \). The focal length of the lens is:
- Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C), and (D) as given below.
Assertion (A): In double slit experiment, if one slit is closed, diffraction pattern due to the other slit will appear on the screen.
Reason (R): For interference, at least two waves are required.
- CBSE CLASS XII - 2025
- Wave optics
- Find the least value of ‘a’ so that $f(x) = 2x^2 - ax + 3$ is an increasing function on $[2, 4]$.
- CBSE CLASS XII - 2025
- Functions
From the following information, calculate opening and closing inventory :
- Gross Profit Ratio – 25%
- Revenue from operations – ₹ 8,00,000
- Inventory turnover ratio – 4 times
- Opening inventory was 2 times of the closing inventory.
- CBSE CLASS XII - 2025
- Balance sheet statement
View More Questions