Assertion : Terminal alkynes on oxidation with Bayer's reagent give a mixture of carboxylic acid and `CO_(2)`
Reason : Terminal alkynes show acidic character.

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 regarding the assertion and reason related to terminal alkynes and their oxidation with Baeyer's reagent, let's break it down step by step:

### Step 1: Understanding the Assertion
The assertion states that terminal alkynes, when oxidized with Baeyer's reagent (potassium permanganate, KMnO4), yield a mixture of carboxylic acid and carbon dioxide (CO2).

### Step 2: Analyzing the Reaction
When terminal alkynes undergo oxidation with KMnO4, the triple bond (C≡C) is oxidized. For example, if we take propyne (CH3C≡CH), the oxidation process will lead to the formation of propanoic acid (CH3COOH) and carbon dioxide (CO2). This occurs because the oxidation is strong enough to cleave the triple bond and oxidize the terminal carbon to a carboxylic acid while converting the other carbon into CO2.

### Step 3: Conclusion on the Assertion
Since the oxidation of terminal alkynes indeed results in the formation of carboxylic acids and CO2, we conclude that the assertion is correct.

### Step 4: Understanding the Reason
The reason provided states that terminal alkynes exhibit acidic character. This is due to the presence of a hydrogen atom attached to the terminal carbon of the alkyne, which can be released as a proton (H+). The resulting anion (alkynide ion) is stabilized due to the sp hybridization of the carbon atom, which has a higher s-character compared to sp2 or sp3 hybridized carbons.

### Step 5: Conclusion on the Reason
The reason is also correct; terminal alkynes do show acidic character due to the stability of the alkynide ion formed upon deprotonation.

### Step 6: Analyzing the Relationship
While both the assertion and reason are correct, they are not directly related. The assertion discusses the outcome of oxidation, while the reason explains the acidic nature of terminal alkynes. The acidic character does not directly explain the oxidation process or the formation of products.

### Final Conclusion
Both the assertion and the reason are correct statements, but the reason does not provide a correct explanation for the assertion. Therefore, the answer to the question is:
**B. Assertion and reason both are correct statements but reason is not the correct explanation for assertion.**