Which of the following statements are correct ?

Options

A. `EtO^(Ө)` is a stronger nucleophile than `overset (Ө) O H`.
B. `MeO^(Ө)` is a stronger nucleophile than `overset (Ө) O H`
C. `RCOO^(Ө)` is a stronger nucleophile than `ROH`.
D. `MeO^(Ө)` is a weaker nucleophile than `overset (Ө) O H`.

Explanation

To determine which statements are correct regarding the nucleophilic strength of various species, we will analyze the nucleophilic character based on their acidic strength. Here’s a step-by-step solution:

### Step 1: Identify the Nucleophiles
We are comparing the following nucleophiles:
- MEO⁻ (Methoxide)
- ETO⁻ (Ethoxide)
- OH⁻ (Hydroxide)
- RCOO⁻ (Carboxylate)

### Step 2: Understand Acidic and Nucleophilic Strength
The acidic strength of a compound is inversely related to its nucleophilic strength. A stronger acid will have a weaker conjugate base, which means that the conjugate base will be a weaker nucleophile.

### Step 3: Establish Acidic Strength Order
1. RCOOH (Carboxylic acid) > H2O (Water) > ROH (Alcohol)
- RCOOH is a stronger acid than ROH and H2O.

### Step 4: Establish Nucleophilic Strength Order
Based on the acidic strength, we can deduce the nucleophilic strength:
- RO⁻ (Alkoxide) > OH⁻ > RCOO⁻
- Therefore, ETO⁻ > OH⁻ > MEO⁻

### Step 5: Analyze Each Statement
1. **Statement 1**: ETO⁻ is a stronger nucleophile than OH⁻.
- **True**: Since ETO⁻ is higher in the nucleophilic strength order than OH⁻.

2. **Statement 2**: MEO⁻ is a stronger nucleophile than OH⁻.
- **False**: OH⁻ is stronger than MEO⁻.

3. **Statement 3**: RCOO⁻ is a stronger nucleophile than ROH.
- **False**: ROH is a stronger nucleophile than RCOO⁻ due to its stronger acidic character.

4. **Statement 4**: OH⁻ is a stronger nucleophile than MEO⁻.
- **True**: OH⁻ is indeed stronger than MEO⁻.

### Conclusion
The correct statements are:
- Statement 1: True
- Statement 4: True

### Final Answer
The correct options are Statement 1 and Statement 4.

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