When chlorine is passed over dry slaked lime at room temperature, the main reaction product is:

Options

A. `Ca(CIO_(2))`
B. `CaCl_(2)`
C. `CaOCl_(2)`
D. `Ca(Ocl_(2))`

Explanation

To solve the question of what happens when chlorine is passed over dry slaked lime at room temperature, we can break down the reaction step by step.

### Step 1: Identify the Reactants
We start with two reactants:
- Dry slaked lime, which is chemically known as calcium hydroxide (Ca(OH)2).
- Chlorine gas (Cl2).

### Step 2: Understand the Reaction
When chlorine gas is introduced to dry slaked lime, a chemical reaction occurs. The chlorine reacts with the calcium hydroxide.

### Step 3: Write the Chemical Equation
The reaction can be represented by the following chemical equation:
\[ \text{Ca(OH)}_2 + \text{Cl}_2 \rightarrow \text{Ca(OCl)}_2 + \text{H}_2\text{O} \]

In this reaction, calcium hydroxide reacts with chlorine to form calcium oxychloride (Ca(OCl)2), commonly known as bleaching powder, and water (H2O).

### Step 4: Identify the Main Product
The main product of this reaction is calcium oxychloride (Ca(OCl)2), which is the chemical name for bleaching powder.

### Step 5: Conclusion
Therefore, when chlorine is passed over dry slaked lime at room temperature, the main reaction product is bleaching powder, which can be represented as Ca(OCl)2 or CaCl2·Ca(OH)2 (bleaching powder).

### Final Answer
The main reaction product is **Calcium Oxychloride (Bleaching Powder), Ca(OCl)2**.

---