On reaction with Mg, very dilute nitric acid produces

Options

A. `NH_(3)`
B. Nitrous oxide
C. Nitric oxide
D. hydrogen

Explanation

To solve the question regarding the reaction of magnesium (Mg) with very dilute nitric acid (HNO3), we will follow these steps:

### Step 1: Understand the Reactants
- **Magnesium (Mg)**: A reactive metal that can displace hydrogen from acids.
- **Very Dilute Nitric Acid (HNO3)**: A weak oxidizing agent in its dilute form.

### Step 2: Identify the Reaction Type
- The reaction between magnesium and dilute nitric acid is a single displacement reaction where magnesium displaces hydrogen from nitric acid.

### Step 3: Write the Balanced Chemical Equation
- The reaction can be represented as:
\[ \text{Mg} + 2 \text{HNO}_3 \rightarrow \text{Mg(NO}_3\text{)}_2 + \text{H}_2 \]
However, since HNO3 is a weak oxidizing agent in dilute form, the actual products will be different. Instead, the reaction produces magnesium nitrate and hydrogen gas:
\[ \text{Mg} + 2 \text{HNO}_3 \rightarrow \text{Mg(NO}_3\text{)}_2 + \text{H}_2 \]

### Step 4: Identify the Products
- The products of the reaction are:
- **Magnesium Nitrate (Mg(NO3)2)**: A soluble salt.
- **Hydrogen Gas (H2)**: Released as a byproduct.

### Step 5: Conclusion
- Therefore, when magnesium reacts with very dilute nitric acid, it produces magnesium nitrate and hydrogen gas.

### Final Answer
On reaction with Mg, very dilute nitric acid produces magnesium nitrate and hydrogen gas.

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