Question:
Which of the following alcohol is dehydrated most easily by concentrated $ {H_2SO_4}$
Which of the following alcohol is dehydrated most easily by concentrated $ {H_2SO_4}$
Updated On: Jun 20, 2022
- $\ce{p - O2NC6 H4 CH (OH) CH3}$
- $\ce{p - ClC6 H4 CH (OH) CH3}$
- $\ce{p - CH3 OC6 H4 CH (OH) CH3}$
- $\ce{C6 H5 CH (OH) CH3}$
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
The case of dehydration of alcohol takes place most easily in case $(c)$.
In all cases during dehydration carbocation is formed.
In case $(a)$, carbocation destabilise by $NO_2(- I)$ group hence, dehydration reaction proceed with difficulty.
In case $(b)$ dehydration reaction takes place less difficulty than case $(a)$ because $Cl$ group show $(-I)$ and $(+R)$ effect.
In case $(c)$ dehydration reaction proceed easily because carbocation is stabilised by $OCH_3(+R)$ group.
Was this answer helpful?
0
0
Top Questions on Alcohols
- Which one of the following alcohols reacts instantaneously with Lucas reagent?
- Which of the following compounds has the highest boiling point?
What is the percentage of carbon in the product 'Z' formed in the reaction?
- An alcohol X (C\(_5\)H\(_{12}\)O) when reacted with conc. HCl and anhydrous ZnCl\(_2\), produces turbidity instantly. The alcohol X can be prepared from which of the following reactions?
- Which method will you use to seperate Methyl alcohol to acetone ?
View More Questions
Questions Asked in UPSEE exam
Acetic acid dissociates 1.3%. What will be the pH of \(\frac {N}{10}\) solution of the acid.
- UPSEE - 2019
- Acids and Bases
Let z = x + iy be a complex number satisfying the following equation |z - (2 + i)| = |Re(z) - 4 | Which of the following options describes the above equation?
- UPSEE - 2019
- Complex Numbers and Quadratic Equations
- Let x be an $n \times 1$ matrix. Let O and I be the zero, and identity matrices of order n, respectively. Define $P = - \frac{xx^T}{x^Tx}$ is the transpose of x. Then which of the following options is always CORRECT?
- UPSEE - 2019
- Transpose of a Matrix
- Let z = x + iy be a complex number. The equation arg $\left( \frac{z + 1}{z}\right) = \frac{\pi}{4}$ represents
- UPSEE - 2019
- Complex Numbers and Quadratic Equations
- Let $a_1, a_2, a_3$, ... be an arithmetic progression with nonzero common difference. It is given that $\sum^{12}_{i = 4} a_i = 63$ and $a_k = 7 $ for some k . Then the value of k is
- UPSEE - 2019
- Arithmetic Progression
View More Questions
Concepts Used:
Alcohols
What is Alcohol?
Alcohol is a derivative of water (H2O) that has one, two, or more hydroxyl groups that are attached to a carbon atom of a hydrocarbon chain (an alkyl group). It is one of the most common organic compounds used in sweeteners, fragrances, and medicine.
Read More: Types of Alcohol
Uses of Alcohol:
- Ethanol is the alcohol used in alcoholic drinks. It can be used as an industrial methylated spirit where methanol is used very little in quantity as it can be dangerous.
- It is used as fuel to produce carbon dioxide and water by the process of fermentation. Whereas methanol burns carbon dioxide and water to facilitate combustion.
- Alcohol is an organic compound used as a solvent that is insoluble in water.
- It can be used to lower the level of sugar.
- Alcohol is used as a preservative in laboratories.