One mole of propanone and one mole of formaldehyde are the products of ozonolysis of one mole of an alkene. The alkene may be

Options

A. 2-methylpropene
B. 2,2-dimethyl-1-butene
C. Propene
D. 2-butene

Explanation

To determine the alkene that yields one mole of propanone and one mole of formaldehyde upon ozonolysis, we can follow these steps:

### Step 1: Understand the Products
The products of ozonolysis are propanone (CH3COCH3) and formaldehyde (HCHO). Propanone has three carbon atoms, and formaldehyde has one carbon atom.

### Step 2: Determine the Structure of the Alkene
When an alkene undergoes ozonolysis, the double bond is cleaved, and oxygen atoms are added to the resulting fragments. Given that we are producing one mole of propanone and one mole of formaldehyde, we need to find an alkene that can be split to yield these two products.

### Step 3: Combine the Carbon Atoms
The total number of carbon atoms in the products is 3 (from propanone) + 1 (from formaldehyde) = 4 carbon atoms. Therefore, the alkene must have 4 carbon atoms.

### Step 4: Draw Possible Structures
We can consider various structures for a 4-carbon alkene. The simplest structure is butene (C4H8). There are two isomers of butene: 1-butene and 2-butene.

### Step 5: Analyze the Ozonolysis of 2-Butene
Let’s analyze the ozonolysis of 2-butene (CH3-CH=CH-CH3):
- When 2-butene undergoes ozonolysis, the double bond breaks, and we can visualize the reaction as follows:
- CH3-CH=CH-CH3 + O3 → CH3COCH3 (propanone) + HCHO (formaldehyde)

### Step 6: Confirm the Products
The ozonolysis of 2-butene indeed produces one mole of propanone and one mole of formaldehyde, confirming that the alkene we are looking for is 2-butene.

### Step 7: Naming the Alkene
The structure of the alkene is confirmed to be 2-butene, which can also be referred to as but-2-ene.

### Conclusion
Thus, the alkene that yields one mole of propanone and one mole of formaldehyde upon ozonolysis is **2-butene** (but-2-ene).

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