When ethanol is heated with HI and red phosphorus, it gives

Options

A. ethyl iodide
B. ethane
C. ethylene
D. ether

Explanation

To solve the question of what product is formed when ethanol is heated with HI and red phosphorus, we can follow these steps:

### Step 1: Identify the Reactants
Ethanol (C2H5OH) is the starting material. The other reactants are hydrogen iodide (HI) and red phosphorus (P).

### Step 2: Understand the Role of Red Phosphorus and HI
Red phosphorus in the presence of HI acts as a strong reducing agent. This means it can facilitate the reduction of ethanol.

### Step 3: Determine the Reaction Process
When ethanol is heated with HI and red phosphorus, the hydroxyl group (-OH) of ethanol can be reduced. The reduction process involves the removal of the -OH group and the addition of hydrogen atoms.

### Step 4: Write the Reaction
The reaction can be represented as:
\[ \text{C}_2\text{H}_5\text{OH} \xrightarrow{\text{HI, Red P}} \text{C}_2\text{H}_6 + \text{I}_2 \]
Here, ethanol is converted into ethane (C2H6) as the major product.

### Step 5: Conclusion
The major product formed when ethanol is heated with HI and red phosphorus is ethane (C2H6).

### Final Answer
When ethanol is heated with HI and red phosphorus, it gives ethane.

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