Thermal decomposition of ammonium dichromate gives

Options

A. `N_(2),H_(2)OandCr_(2)O_(3)`
B. `N_(2),NH_(3)andCrO`
C. `(NH_(4))_(2)CrO_(4)andH_(2)O`
D. `N_(2),H_(2)OandCrO`

Explanation

To solve the question regarding the thermal decomposition of ammonium dichromate, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Compound**:
Ammonium dichromate is represented by the chemical formula \( \text{(NH}_4)_2\text{Cr}_2\text{O}_7 \).

2. **Understand Thermal Decomposition**:
Thermal decomposition is a chemical reaction where a compound breaks down into simpler substances when heated.

3. **Heating Ammonium Dichromate**:
When ammonium dichromate is heated, it undergoes thermal decomposition.

4. **Products of Decomposition**:
The products formed from the thermal decomposition of ammonium dichromate are:
- Nitrogen gas (\( \text{N}_2 \))
- Water (\( \text{H}_2\text{O} \))
- Chromium(III) oxide (\( \text{Cr}_2\text{O}_3 \))

5. **Write the Balanced Equation**:
The balanced chemical equation for the thermal decomposition of ammonium dichromate can be written as:
\[ \text{(NH}_4)_2\text{Cr}_2\text{O}_7 \xrightarrow{\text{heat}} \text{Cr}_2\text{O}_3 + \text{N}_2 + 4\text{H}_2\text{O} \]

6. **Conclusion**:
Therefore, the thermal decomposition of ammonium dichromate yields nitrogen gas, water, and chromium(III) oxide.

### Final Answer:
The thermal decomposition of ammonium dichromate gives nitrogen gas, water, and chromium(III) oxide.

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