The reaction of calcium cyanamide with water yields

Options

A. `Ca(OH)_(2) and N_(2)`
B. `CaC_(2) and N_(2)H_(4)`
C. `Ca(HCO_(3))_(2) and NH_(3)`
D. `CaCO_(3) and NH_(4)OH`

Answer

To solve the question regarding the reaction of calcium cyanamide with water, we can break down the process step by step.

### Step 1: Identify the Reactants
The reactant in this reaction is calcium cyanamide, which has the chemical formula CaCN₂.

### Step 2: Write the Reaction
When calcium cyanamide reacts with water (H₂O), it undergoes hydrolysis. The reaction can be represented as:
\[ \text{CaCN}_2 + \text{H}_2\text{O} \rightarrow \text{CaCO}_3 + \text{NH}_4\text{OH} \]

### Step 3: Identify the Products
From the reaction, we can see that the products formed are:
1. Calcium carbonate (CaCO₃)
2. Ammonium hydroxide (NH₄OH), which can further dissociate into ammonia (NH₃) and water.

### Step 4: Final Products
Thus, the final products of the reaction can be summarized as:
- Calcium carbonate (CaCO₃)
- Ammonium hydroxide (NH₄OH) which can release ammonia (NH₃) into the solution.

### Conclusion
The reaction of calcium cyanamide with water yields calcium carbonate and ammonium hydroxide (which can release ammonia).

### Summary of the Reaction
\[ \text{CaCN}_2 + \text{H}_2\text{O} \rightarrow \text{CaCO}_3 + \text{NH}_4\text{OH} \]