Which of the following statement about `OHCH_(2)CH(OH)CHO` is not correct?

Options

A. It is an isomer of 1, 3-dihydoxypropanone
B. contains a tertiary alcoholic group
C. has the same empirical formula as glucose
D. None of these

Explanation

To determine which statement about the compound `OHCH₂CH(OH)CHO` (which is also known as glyceraldehyde) is not correct, we will analyze the statements provided.

### Step-by-Step Solution:

1. **Identify the Structure of the Compound:**
- The compound `OHCH₂CH(OH)CHO` can be broken down as follows:
- The first carbon (C1) has a hydroxyl group (OH) attached, making it a primary alcohol.
- The second carbon (C2) also has a hydroxyl group (OH), making it a secondary alcohol.
- The third carbon (C3) is part of the aldehyde functional group (CHO).
- Thus, the structure can be represented as:
```
OH
|
CH2 - CH - CHO
|
OH
```

2. **Analyze the Statements:**
- **Statement 1:** "It is an isomer of 1,3-dihydroxypropanone."
- **Analysis:** The molecular formula of both `OHCH₂CH(OH)CHO` and 1,3-dihydroxypropanone (C3H6O3) is the same. Therefore, this statement is correct.

- **Statement 2:** "It contains a tertiary alcoholic group."
- **Analysis:** In the structure, both hydroxyl groups are attached to primary and secondary carbons. There are no tertiary carbons present in this compound. Therefore, this statement is incorrect.

- **Statement 3:** "It has the same empirical formula as glucose."
- **Analysis:** The empirical formula of `OHCH₂CH(OH)CHO` is CH2O, which is also the empirical formula for glucose (C6H12O6). Therefore, this statement is correct.

3. **Conclusion:**
- The statement that is not correct is **Statement 2**, which claims that the compound contains a tertiary alcoholic group.

### Final Answer:
The statement that is not correct about `OHCH₂CH(OH)CHO` is: **"It contains a tertiary alcoholic group."**

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