`(H_2N)_(2)CO + X to N_2 + CO_2 + H_2O`
Which nitrogen compound should X be here

Options

A. Ammoina
B. Nitrous oxide
C. Nitrous acid
D. Hydrazoic acid

Answer

To solve the question, we need to determine what compound X is in the reaction:

\[ (H_2N)_2CO + X \rightarrow N_2 + CO_2 + H_2O \]

1. **Identify the reactant**: The compound \((H_2N)_2CO\) is urea, which has the formula \(NH_2CONH_2\).

2. **Analyze the products**: The products of the reaction are nitrogen gas (\(N_2\)), carbon dioxide (\(CO_2\)), and water (\(H_2O\)). This indicates that a nitrogen compound is likely involved in the reaction to produce nitrogen gas.

3. **Consider possible reactions**: A common reaction that produces nitrogen gas from urea involves the use of nitrous acid (\(HNO_2\)).

4. **Write the reaction**: The reaction can be represented as:
\[ NH_2CONH_2 + HNO_2 \rightarrow N_2 + CO_2 + H_2O \]

5. **Balance the reaction**: To balance the reaction, we can write:
\[ NH_2CONH_2 + 2HNO_2 \rightarrow N_2 + CO_2 + 3H_2O \]

This shows that two moles of nitrous acid react with one mole of urea to produce nitrogen gas, carbon dioxide, and water.

6. **Conclusion**: Therefore, the compound \(X\) that reacts with urea to produce the given products is \(HNO_2\) (nitrous acid).

**Final Answer**: \(X = HNO_2\)

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