If the number of `sigma and pi` bonds in vinyl acetate are x and y respectively. What is the sum of `x+y`?

Answer

To solve the problem of finding the sum of the number of sigma (σ) and pi (π) bonds in vinyl acetate, we will follow these steps:

### Step 1: Understand the Structure of Vinyl Acetate
Vinyl acetate has the molecular formula C4H8O2. Its structural representation can be drawn as follows:
- The molecule consists of a vinyl group (C=C) and an acetate group (C(=O)O).
- The structure can be represented as CH2=CH-O-C(=O)-CH3.

### Step 2: Identify the Types of Bonds
In the structure of vinyl acetate:
- **Sigma (σ) bonds** are formed by the head-on overlap of atomic orbitals and are present in all single bonds.
- **Pi (π) bonds** are formed by the side-on overlap of p-orbitals and are present in double and triple bonds.

### Step 3: Count the Sigma Bonds
1. **C-H bonds**: There are 5 C-H bonds (2 from CH2, 1 from CH, and 2 from CH3).
2. **C-C bonds**: There is 1 C-C bond (between the two carbon atoms in the vinyl group).
3. **C-O bonds**: There are 2 C-O bonds (one from the vinyl group to the acetate and one from the acetate to the carbonyl).

Total σ bonds = C-H (5) + C-C (1) + C-O (2) = 5 + 1 + 2 = **8 σ bonds**.

### Step 4: Count the Pi Bonds
1. **C=C bond**: There is 1 pi bond from the double bond between the two carbon atoms in the vinyl group.
2. **C=O bond**: There is 1 pi bond from the carbonyl (C=O) in the acetate group.

Total π bonds = C=C (1) + C=O (1) = 1 + 1 = **2 π bonds**.

### Step 5: Calculate the Sum of σ and π Bonds
Now, we can find the sum:
- Let x = number of σ bonds = 8
- Let y = number of π bonds = 2

Thus, the sum of x + y = 8 + 2 = **10**.

### Final Answer
The sum of the number of sigma and pi bonds in vinyl acetate is **10**.

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