Ozonolysis products of 2-pentyne after decomposition of ozonide with water and subsequent oxidation are:

Options

A. Ethanoic acid and propanoic acid
B. Ethanoic acid and propanone
C. Ethanoic acid
D. Formic acid and glyoxal

Explanation

To find the ozonolysis products of 2-pentyne after decomposition of the ozonide with water and subsequent oxidation, we can follow these steps:

### Step 1: Identify the Structure of 2-Pentyne
2-Pentyne is a terminal alkyne with the formula C5H8. Its structure can be represented as:
```
CH3-C≡C-CH2-CH3
```

### Step 2: Perform Ozonolysis
In ozonolysis, ozone (O3) is added to the alkyne. The triple bond in 2-pentyne will break and form an ozonide. The ozonide structure can be represented as:
```
CH3-C(O)-C(O)-CH2-CH3
```
This ozonide will have two carbonyl (C=O) groups.

### Step 3: Decompose the Ozonide with Water
When the ozonide is treated with water, it undergoes hydrolysis. The ozonide decomposes to form two carbonyl compounds. The reaction can be represented as:
```
CH3-C(O)-C(O)-CH2-CH3 → CH3-CO-CH2-CH3 + CH3-COOH
```
This results in the formation of butan-2-one (a ketone) and propanoic acid (a carboxylic acid).

### Step 4: Oxidation of the Products
The next step involves oxidation. In this case, hydrogen peroxide (H2O2) can be used for further oxidation. The products formed after oxidation will be:
- Butan-2-one remains unchanged as it is already a ketone.
- Propanoic acid remains unchanged as it is already a carboxylic acid.

### Step 5: Final Products
After the complete reaction sequence, the final products of ozonolysis of 2-pentyne after decomposition and oxidation are:
1. Butan-2-one (C4H8O)
2. Propanoic acid (C3H6O2)

### Conclusion
The ozonolysis products of 2-pentyne after decomposition of ozonide with water and subsequent oxidation are butan-2-one and propanoic acid.