Write the mechanism of hydration of ethene to yield ethanol
Solution and Explanation
The mechanism of hydration of ethene to form ethanol involves three steps.
Step 1:Protonation of ethene to form carbocation by electrophilic attack of H3O+:H20+H+\(\rightarrow\)H3O+
Step 2:Nucleophilic attack of water on carbocation:
Step 3:Deprotonation to form ethanol:
Top Questions on Alcohols, Phenols And Ethers
- Write the structures of (A), (B), and (C) in the following reaction:
Reaction Scheme: \[ (C) \xleftarrow{\text{conc. } HNO_3} \text{Phenol} \xrightarrow{\text{dil. } HNO_3} (A) + (B) \]- UP Board XII - 2026
- Chemistry
- Alcohols, Phenols And Ethers
- Which of the following Grignard Reagent will be used to prepare cyclohexylmethanol when treated with methanal?
- CBSE CLASS XII - 2026
- Chemistry
- Alcohols, Phenols And Ethers
- Write the reaction involved in Friedel-Crafts acylation of anisole.
- CBSE CLASS XII - 2026
- Chemistry
- Alcohols, Phenols And Ethers
- Write the reaction involved in Kolbe’s reaction.
- CBSE CLASS XII - 2026
- Chemistry
- Alcohols, Phenols And Ethers
- Write the reaction involved in Reimer-Tiemann reaction.
- CBSE CLASS XII - 2026
- Chemistry
- Alcohols, Phenols And Ethers
Questions Asked in CBSE CLASS XII exam
- Find the general solution of the differential equation \[ y\log y\,\frac{dx}{dy}+x=\frac{2}{y}. \]
- CBSE CLASS XII - 2026
- Differential Equations
- A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of 60° in 0.2 s. The value of emf induced in the loop will be:
- CBSE CLASS XII - 2026
- Electromagnetic induction
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following:
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).
- CBSE CLASS XII - 2026
- Integration
- Consider a cylindrical conductor of length \( l \) and area of cross-section \( A \). Current \( I \) is maintained in the conductor and electrons drift with velocity \( \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) \), where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]
- CBSE CLASS XII - 2026
- Current Density
- The painting Hazrat Nizamuddin Auliya and Amir Khusro belongs to which sub-school of Deccan Miniature?
- CBSE CLASS XII - 2026
- Indian Miniature Paintings and Museums