The reaction of zinc with dilute and concentrated nitric acid, respectively, produce

Options

A. `NO_(2) and N_(2)O`
B. `N_(2)O and NO_(2)`
C. `NO_(2) and NO`
D. `NO and N_(2)O`

Answer

To solve the question regarding the reaction of zinc with dilute and concentrated nitric acid, we can break it down into steps:

### Step 1: Understand the Reactants
- The reactants are zinc (Zn) and nitric acid (HNO3). We need to consider two scenarios: one with dilute nitric acid and the other with concentrated nitric acid.

### Step 2: Reaction with Dilute Nitric Acid
- When zinc reacts with dilute nitric acid, the reaction can be represented as:

\[ \text{Zn} + 4 \text{HNO}_3 \rightarrow 4 \text{Zn(NO}_3\text{)}_2 + \text{N}_2\text{O} + 2 \text{H}_2\text{O} \]

- In this reaction, zinc nitrate (Zn(NO3)2), nitrous oxide (N2O), and water (H2O) are produced.

### Step 3: Reaction with Concentrated Nitric Acid
- When zinc reacts with concentrated nitric acid, the reaction can be represented as:

\[ \text{Zn} + 4 \text{HNO}_3 \rightarrow 4 \text{Zn(NO}_3\text{)}_2 + 2 \text{NO}_2 + 2 \text{H}_2\text{O} \]

- In this case, zinc nitrate (Zn(NO3)2), nitrogen dioxide (NO2), and water (H2O) are produced.

### Step 4: Summarize the Products
- From the reactions:
- With **dilute HNO3**, the products are **N2O** and **Zn(NO3)2**.
- With **concentrated HNO3**, the products are **NO2** and **Zn(NO3)2**.

### Final Answer
- Therefore, the reaction of zinc with dilute nitric acid produces **N2O**, while the reaction with concentrated nitric acid produces **NO2**.