For the reaction, Phenol `rarr` Cyclohexanol, the `s:p` ratio of the carbon attached to `-OH`group change from….to….

Options

A. `((1)/(3):(2)/(3))((1)/(4):(3)/(4))`
B. `((1)/(3):(2)/(3))((1)/(2):(1)/(2))`
C. `((1)/(2):(1)/(2))((1)/(3):(2)/(3))`
D. None of these

Explanation

To solve the question regarding the change in the s:p ratio of the carbon attached to the -OH group when phenol is converted to cyclohexanol, we can follow these steps:

### Step 1: Identify the structure of phenol and cyclohexanol
- **Phenol**: The molecular structure of phenol consists of a benzene ring with a hydroxyl (-OH) group attached to it. The carbon atom that is attached to the -OH group is sp² hybridized due to the presence of a double bond in the aromatic ring.
- **Cyclohexanol**: Cyclohexanol is a six-membered saturated ring with a hydroxyl (-OH) group. The carbon atom attached to the -OH group in cyclohexanol is sp³ hybridized because it is bonded to four other atoms (three hydrogens and one hydroxyl group) without any double bonds.

### Step 2: Determine the hybridization and s:p ratios
- **For Phenol**:
- Hybridization of the carbon attached to the -OH group: sp²
- The s:p ratio can be calculated as follows:
- s orbitals: 1 (from sp²)
- p orbitals: 2 (from sp²)
- Therefore, the s:p ratio = 1:2.

- **For Cyclohexanol**:
- Hybridization of the carbon attached to the -OH group: sp³
- The s:p ratio can be calculated as follows:
- s orbitals: 1 (from sp³)
- p orbitals: 3 (from sp³)
- Therefore, the s:p ratio = 1:3.

### Step 3: Summarize the change in s:p ratio
- **Initial s:p ratio in Phenol**: 1:2
- **Final s:p ratio in Cyclohexanol**: 1:3

### Conclusion
The s:p ratio of the carbon attached to the -OH group changes from **1:2** in phenol to **1:3** in cyclohexanol.

### Final Answer
The s:p ratio changes from **1:2** to **1:3**.

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