When ammonia is heated with `CO_2` under pressure, the product is

Options

A. `(NH_4)_2 CO_3`
B. `NH_2 CONH_2`
C. `NH_2COONH_4`
D. `NH_4HCO_3`

Explanation

To solve the question of what product is formed when ammonia is heated with carbon dioxide under pressure, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are ammonia (NH₃) and carbon dioxide (CO₂).

**Hint:** Remember that ammonia is a nitrogen-containing compound, while carbon dioxide is a common oxide of carbon.

### Step 2: Understand the Reaction Conditions
The reaction occurs under heat and pressure. This is significant because it facilitates the formation of the product.

**Hint:** High pressure and temperature often favor the formation of certain products in chemical reactions.

### Step 3: Write the Reaction
When ammonia reacts with carbon dioxide, they can combine to form urea (NH₂CO(NH₂)₂) and water (H₂O). The reaction can be summarized as follows:

\[ 2 \text{NH}_3 + \text{CO}_2 \rightarrow \text{NH}_2\text{CO}\text{(NH}_2)_2 + \text{H}_2\text{O} \]

**Hint:** Look for common reactions involving ammonia and carbon dioxide; they often lead to the formation of urea.

### Step 4: Identify the Product
The main product of this reaction is urea, which is a nitrogenous compound widely used as a fertilizer.

**Hint:** Urea is known for its role in agriculture and is often synthesized from ammonia and carbon dioxide.

### Step 5: Conclusion
The product formed when ammonia is heated with carbon dioxide under pressure is urea (NH₂CO(NH₂)₂).

**Final Answer:** Urea (NH₂CO(NH₂)₂) is the product formed.

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