Assertion: Terminal alkynes on oxidation with acidic `KMnO_(4)` at high temperature give `CO_(2)` and carboxylic acids.
Reason: Terminal alkynes are acidic in nature

Options

A. Assertion and reason both are correct statements and reason is correct explanation for assertion.
B. Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C. Assertion is correct statement, but reason is wrong statement.
D. Assertion is wrong statement but reason is correct statement.

Answer

To solve the question, we will analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that terminal alkynes, when oxidized with acidic KMnO₄ at high temperatures, yield CO₂ and carboxylic acids.

- Terminal alkynes have the general structure R-C≡C-H, where R is an alkyl group.
- When terminal alkynes undergo oxidation with a strong oxidizing agent like acidic KMnO₄, they are converted into carboxylic acids.
- At high temperatures, these carboxylic acids can further decompose to produce CO₂ and water.

Thus, the assertion is **true**.

### Step 2: Analyze the Reason
The reason states that terminal alkynes are acidic in nature.

- Terminal alkynes can indeed lose a proton (H⁺) from the terminal hydrogen, forming an anion (R-C≡C⁻).
- The acidity of terminal alkynes can be attributed to the stability of the resulting anion. The sp-hybridized carbon in the alkyne has 50% s-character, which makes it more electronegative and thus stabilizes the negative charge when the hydrogen is lost.
- Therefore, terminal alkynes are acidic due to their ability to stabilize the negative charge on the anion formed after deprotonation.

Thus, the reason is also **true**.

### Step 3: Evaluate the Relationship Between Assertion and Reason
While both the assertion and reason are true, the reason does not correctly explain why terminal alkynes yield CO₂ and carboxylic acids upon oxidation. The oxidation occurs due to the action of a strong oxidizing agent (KMnO₄), not solely because terminal alkynes are acidic.

### Conclusion
Both the assertion and reason are true, but the reason is not the correct explanation for the assertion.

### Final Answer
The correct option is: Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.

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