The oxidation product of ethylene by air at `200-400^(@)C` in presence of silver catalyst is

Options

A. Ethylene glycol
B. Ethylene oxide
C. 1,2-Ethanediol
D. Ethylene chlorohydrin

Answer

To determine the oxidation product of ethylene when it reacts with air at a temperature range of 200-400°C in the presence of a silver catalyst, we can follow these steps:

### Step 1: Identify the Reactants
The reactant in this case is ethylene, which has the chemical formula \( \text{C}_2\text{H}_4 \) or \( \text{CH}_2=CH_2 \).

**Hint:** Look for the structure and formula of ethylene to understand its reactivity.

### Step 2: Understand the Reaction Conditions
The reaction occurs in the presence of air (which contains oxygen) and at elevated temperatures (200-400°C) with a silver catalyst. Silver acts as a catalyst to facilitate the oxidation process.

**Hint:** Recall the role of catalysts in chemical reactions—they speed up the reaction without being consumed.

### Step 3: Determine the Type of Reaction
This is an oxidation reaction, where ethylene will react with oxygen to form an oxidized product.

**Hint:** Oxidation typically involves the addition of oxygen or the removal of hydrogen.

### Step 4: Predict the Product
When ethylene is oxidized under these conditions, it forms ethylene oxide. The reaction can be summarized as follows:

\[ \text{C}_2\text{H}_4 + \text{O}_2 \xrightarrow{Ag, 200-400°C} \text{C}_2\text{H}_4\text{O} \text{ (ethylene oxide)} \]

**Hint:** Consider the structure of the product; ethylene oxide is a cyclic ether formed from the oxidation of ethylene.

### Step 5: Confirm the Product
The product formed, ethylene oxide, is also known as oxirane. It is a three-membered cyclic ether and is the expected product when ethylene undergoes oxidation in the presence of a silver catalyst.

**Hint:** Verify if the product matches the expected functional groups and structure derived from the reactants.

### Conclusion
The oxidation product of ethylene by air at 200-400°C in the presence of a silver catalyst is **ethylene oxide**.

**Final Answer:** Ethylene oxide (C2H4O) is the correct oxidation product.