Consider the given reaction. The total number of oxygen atoms present per molecule of the product (P) is____.
Consider the given reaction. The total number of oxygen atoms present per molecule of the product (P) is____.
Correct Answer: 1
Approach Solution - 1
The reaction shown is an ozonolysis of 2-butene. The ozone (O3) cleaves the double bond, and the reduction with Zn/H2O results in the formation of aldehydes or ketones. For 2-butene, the ozonolysis reaction can be depicted as:
Reactant: \[\text{CH}_{3}\text{CH}=\text{CH}\text{CH}_{3}\]
Step 1: Ozonolysis cleaves the C=C bond.
Step 2: The products are two molecules of acetaldehyde (\[\text{CH}_{3}\text{CHO}\]).
Product (P): Each acetaldehyde molecule contains one oxygen atom.
| Molecule | Oxygen Atoms |
|---|---|
| Acetaldehyde (\[\text{CH}_{3}\text{CHO}\]) | 1 |
Since 2-butene is symmetrical, only one type of product is formed, which is acetaldehyde. The total number of oxygen atoms per molecule of product (P) is therefore 1.
Approach Solution -2
Upon ozonolysis, the compound CH3–CH=CH–CH3 is cleaved at the double bond, resulting in two molecules of CH3–C=O.
Each resulting molecule contains one oxygen atom.
Hence, the total number of oxygen atoms present per molecule of the product is: 1
So, the correct answer is: 1.
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