Acetylene when oxidized with chromic acid gives

Options

A. Ethylene glycol
B. Oxalic acid
C. Formic acid
D. Acetic acid

Answer

To solve the question, "Acetylene when oxidized with chromic acid gives," we will follow these steps:

### Step 1: Identify Acetylene
Acetylene is a hydrocarbon with the formula C₂H₂, which can be represented as H-C≡C-H. It is an alkyne with a triple bond between the two carbon atoms.

**Hint:** Remember that acetylene is a simple alkyne with a triple bond.

### Step 2: Understand the Oxidizing Agent
Chromic acid (H₂CrO₄) is a strong oxidizing agent. It is commonly used in organic chemistry to oxidize alcohols and other compounds.

**Hint:** Recognize that strong oxidizing agents like chromic acid can convert alkynes to various products depending on the reaction conditions.

### Step 3: Reaction of Acetylene with Chromic Acid
When acetylene is treated with chromic acid, it undergoes oxidation. The reaction can be represented as follows:
\[ \text{C}_2\text{H}_2 + \text{H}_2\text{CrO}_4 \rightarrow \text{CH}_3\text{C}(=O)\text{OH} \]
This means that acetylene is oxidized to form acetic acid (CH₃COOH).

**Hint:** Keep in mind that the oxidation of alkynes typically leads to the formation of carboxylic acids.

### Step 4: Identify the Product
The product formed from the oxidation of acetylene with chromic acid is acetic acid (CH₃COOH).

**Hint:** Acetic acid is a common product of the oxidation of terminal alkynes.

### Conclusion
Thus, the final answer to the question "Acetylene when oxidized with chromic acid gives" is acetic acid (CH₃COOH).

**Final Answer:** Acetic acid (CH₃COOH).