The IUPAC name of `(CH_(3)CH_(2)CO)_(2)O` is

Options

A. Propionic anhydride
B. Dipropanoic acid
C. Ethoxypropanoic acid
D. Propanoic anhydride

Explanation

To determine the IUPAC name of the compound `(CH₃CH₂CO)₂O`, we will follow these steps:

### Step 1: Identify the Structure
The compound `(CH₃CH₂CO)₂O` can be rewritten as:
- It consists of two `CH₃CH₂CO` groups attached to an oxygen atom.
- Each `CH₃CH₂CO` group represents a propanoyl group (derived from propanoic acid, which has the structure `CH₃CH₂COOH`).

### Step 2: Recognize the Functional Group
The presence of the oxygen atom connecting two propanoyl groups indicates that this compound is an anhydride. An anhydride is formed from the removal of water from two carboxylic acids.

### Step 3: Determine the Parent Acid
The parent acid here is propanoic acid (also known as propionic acid), which has the formula `C₂H₅COOH`.

### Step 4: Name the Anhydride
For naming an anhydride, we take the name of the parent acid, drop the "-ic acid" suffix, and replace it with "-ic anhydride". Therefore, from propanoic acid, we derive the name:
- Propanoic acid → Propanoic anhydride.

### Step 5: Finalize the IUPAC Name
Thus, the IUPAC name of the compound `(CH₃CH₂CO)₂O` is **Propanoic anhydride**.

### Summary of the Steps:
1. Identify the structure and functional groups.
2. Recognize the presence of an anhydride.
3. Determine the parent acid (propanoic acid).
4. Convert the name to anhydride form.
5. Conclude with the final IUPAC name.