When zinc reacts with very dilute nitric acid it produces

Options

A. `NO`
B. `NH_4.NO_3`
C. `NO_2`
D. `H_2`

Explanation

To determine what zinc produces when it reacts with very dilute nitric acid, we can follow these steps:

### Step 1: Understand the Reactants
Zinc (Zn) is a metal that can react with nitric acid (HNO3), which is a strong acid. When zinc reacts with nitric acid, it can produce various products depending on the concentration of the acid.

**Hint:** Identify the reactants and their properties.

### Step 2: Write the Balanced Chemical Equation
For very dilute nitric acid, the reaction can be represented as:
\[ 4 \text{Zn} + 10 \text{HNO}_3 \rightarrow 4 \text{Zn(NO}_3\text{)}_2 + \text{NH}_4\text{NO}_3 + 3 \text{H}_2\text{O} \]
This equation shows that zinc reacts with nitric acid to produce zinc nitrate, ammonium nitrate, and water.

**Hint:** Write down the balanced equation to see the products formed.

### Step 3: Identify the Products
From the balanced equation, we can see that the products of the reaction include:
- Zinc nitrate (Zn(NO3)2)
- Ammonium nitrate (NH4NO3)
- Water (H2O)

**Hint:** Look closely at the products formed in the reaction.

### Step 4: Analyze the Options
Now, we can analyze the given options:
1. NO2 - Incorrect, as it is not produced in this reaction.
2. NH4NO3 - Correct, as it is one of the products.
3. NO - Incorrect, as it is not produced in this reaction.
4. H2 - Incorrect, as hydrogen gas is not produced in this reaction.

**Hint:** Compare the products from the balanced equation with the provided options.

### Conclusion
The correct answer is that when zinc reacts with very dilute nitric acid, it produces ammonium nitrate (NH4NO3).

**Final Answer:** NH4NO3