Ammonium dichromate on heating gives

Options

A. Chromium oxide and ammonia
B. Chromic acid and nitrogen
C. Chromium oxide and nitrogen
D. Chromic acid and ammonia

Explanation

To solve the question of what ammonium dichromate gives upon heating, we can follow these steps:

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

### Step 2: Understand the Reaction
When ammonium dichromate is heated, it undergoes decomposition. This means it breaks down into simpler substances.

### Step 3: Write the Balanced Chemical Equation
The balanced chemical equation for the decomposition of ammonium dichromate is:

\[ \text{(NH}_4)_2\text{Cr}_2\text{O}_7 \xrightarrow{\text{heat}} \text{Cr}_2\text{O}_3 + \text{N}_2 + \text{H}_2\text{O} \]

### Step 4: Identify the Products
From the balanced equation, we can see that the products of the reaction are:
- Chromium(III) oxide (\( \text{Cr}_2\text{O}_3 \))
- Nitrogen gas (\( \text{N}_2 \))
- Water (\( \text{H}_2\text{O} \))

### Step 5: Conclude the Main Products
Thus, upon heating ammonium dichromate, the main products formed are chromium(III) oxide, nitrogen gas, and water.

### Final Answer
Ammonium dichromate on heating gives chromium(III) oxide, nitrogen gas, and water.

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