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

### Step 1: Identify the structure of 2-pentyne
2-Pentyne is an alkyne with the molecular formula C5H8. Its structure can be represented as:
\[ \text{CH}_3\text{C} \equiv \text{C}\text{CH}_2\text{CH}_3 \]

### Step 2: Ozonolysis of 2-pentyne
When 2-pentyne undergoes ozonolysis, it reacts with ozone (O3) to form an ozonide. The reaction involves the addition of ozone across the triple bond, resulting in a five-membered cyclic ozonide structure.

### Step 3: Hydrolysis of the ozonide
The ozonide is then treated with water (hydrolysis), which breaks the ozonide ring and forms carbonyl compounds. The ozonide decomposes to yield two carbonyl compounds:
1. Acetone (CH3C(=O)CH2CH3)
2. Propan-2-one (CH3C(=O)CH2CH3)

### Step 4: Oxidation of the carbonyl compounds
The carbonyl compounds formed from the hydrolysis can undergo further oxidation. In this case, we will oxidize both products:
1. Acetone (CH3C(=O)CH2CH3) can be oxidized to form acetic acid (CH3COOH).
2. Propan-2-one (CH3C(=O)CH2CH3) can be oxidized to form propanoic acid (C2H5COOH).

### Step 5: Final products
After the ozonolysis, hydrolysis, and subsequent oxidation, the final products are:
1. Acetic acid (CH3COOH)
2. Propanoic acid (C2H5COOH)

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

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