When ethyl hydrogen sulphate is heated with excess of ethyl alcohol at 413 K the product is :

Options

A. Ethane
B. Ethylene
C. Diethyl ether
D. Diethyl sulphate.

Explanation

To solve the question about the product formed when ethyl hydrogen sulfate is heated with excess ethyl alcohol at 413 K, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are:
- Ethyl hydrogen sulfate (C2H5OSO3H)
- Ethyl alcohol (C2H5OH)

### Step 2: Understand the Reaction Conditions
The reaction is conducted at a temperature of 413 K. This temperature is significant because it allows for the reaction to proceed efficiently, promoting the formation of the ether.

### Step 3: Determine the Reaction Type
The reaction between ethyl hydrogen sulfate and ethyl alcohol is an example of an ether formation reaction. This process is often referred to as an esterification reaction, where an alcohol reacts with a sulfate to form an ether and release sulfuric acid.

### Step 4: Write the Reaction
The reaction can be represented as follows:
\[ \text{C2H5OSO3H} + \text{C2H5OH} \rightarrow \text{C2H5OC2H5} + \text{H2SO4} \]

### Step 5: Identify the Product
From the reaction, we can see that the product formed is diethyl ether (C2H5OC2H5) along with sulfuric acid (H2SO4) as a byproduct.

### Step 6: Conclusion
Thus, the product formed when ethyl hydrogen sulfate is heated with excess ethyl alcohol at 413 K is diethyl ether.

### Final Answer
The correct answer is **diethyl ether (C2H5OC2H5)**.

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