`CI_(2)O` is an anhydride of …………

Answer

To determine the compound that \( Cl_2O \) is an anhydride of, we can follow these steps:

### Step 1: Understand the concept of anhydrides
An anhydride is a compound that can be formed by the removal of water (H₂O) from another compound. In the context of acids, an anhydride is often derived from an acid by the elimination of water.

**Hint:** Remember that anhydrides are typically formed from acids by removing water.

### Step 2: Identify the compound related to \( Cl_2O \)
Given \( Cl_2O \), we need to find out which acid it can be derived from. The structure of \( Cl_2O \) suggests that it can react with water to form an acid.

**Hint:** Think about common chlorine-containing acids that could be related to \( Cl_2O \).

### Step 3: Determine the reaction with water
When \( Cl_2O \) reacts with water, it can produce hypochlorous acid (HOCl). The reaction can be represented as follows:

\[ Cl_2O + H_2O \rightarrow 2 HOCl \]

This indicates that \( Cl_2O \) can be formed by removing water from hypochlorous acid.

**Hint:** Consider how the addition of water to \( Cl_2O \) leads to the formation of an acid.

### Step 4: Conclusion
From our analysis, we conclude that \( Cl_2O \) is an anhydride of hypochlorous acid (HOCl).

**Final Answer:** \( Cl_2O \) is an anhydride of hypochlorous acid (HOCl).

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