Which of the following azeotropes is not correctly matched?

Options

A. `HNO_(3)(68%)+H_(2)O(32%)`: Maximum boiling azeotrope, boiling point = 393.5 K
B. `H_(2)O(43%)+HI(57%)`: Minimum boiling azeotrope, boiling point = 290 K
C. `C_(2)H_(5)OH(95.5%)+H_(2)O(4.5%)`: Minimum boiling azeotrope, boiling point = 351.15 K
D. Chloroform `(93.2%)+C_(2)H_(5)OH(6.8%)`: Minimum boiling azeotrope, boiling point = 332.2 K

Answer

To determine which of the azeotropes is not correctly matched, we need to analyze the interactions between the components in each azeotropic mixture and their resulting boiling point behavior according to Raoult's law.

### Step-by-Step Solution:

1. **Understanding Azeotropes**:
- Azeotropes are mixtures of two or more liquids that have a constant boiling point and composition throughout the distillation process. They can either show positive or negative deviations from Raoult's law.

2. **Negative Deviation**:
- When there is strong interaction (like hydrogen bonding) between the components, the vapor pressure decreases, leading to a maximum boiling point azeotrope.

3. **Positive Deviation**:
- When the interactions between the components are weaker than the interactions within the pure components, the vapor pressure increases, leading to a minimum boiling point azeotrope.

4. **Analyzing Each Option**:
- **Option 1: HNO3 and H2O**:
- These form a maximum boiling point azeotrope due to hydrogen bonding. This statement is correct.

- **Option 2: H2O and HI**:
- This should form a maximum boiling point azeotrope due to hydrogen bonding. However, it is incorrectly stated as a minimum boiling point azeotrope. This statement is incorrect.

- **Option 3: Ethanol and Water**:
- Ethanol forms hydrogen bonds with itself. When mixed with water, the hydrogen bonds are disturbed, leading to a minimum boiling point azeotrope. This statement is correct.

- **Option 4: Chloroform and C2H5OH (Ethanol)**:
- Similar to ethanol and water, chloroform and ethanol will also show a positive deviation due to disturbed hydrogen bonds, leading to a minimum boiling point azeotrope. This statement is correct.

5. **Conclusion**:
- The only incorrect match is **Option 2: H2O and HI**, which is stated as a minimum boiling point azeotrope when it should be a maximum boiling point azeotrope.

### Final Answer:
**Option 2: H2O and HI is not correctly matched.**

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