STATEMENT - 1 : Acetic acid and methyl formate are functional isomers . Acetic acid is soluble in water wherease methyl formates is insoluble .
STATEMENT - 2 : Intermolecular hydrogen bonding between solute and solvent dcreases solubility of solute in the solvent.

Options

A. Statement -1 is true, Statement - 2 is true , Statement -2 is a correct explaination for statement - 1
B. Statement -1 True, Statement - 2 is True , Statement - 2 is NOT a correct explanation for statement - 1 .
C. Statement -1 is True, Statement - 2 is False .
D. Statement -1 is False , Statement -2 is True .

Answer

To solve the problem, we will analyze both statements provided and determine their validity step by step.

### Step 1: Analyze Statement 1
- **Statement 1** claims that acetic acid and methyl formate are functional isomers.
- **Acetic acid** has the chemical formula CH₃COOH (or C₂H₄O₂) and contains a carboxylic acid functional group.
- **Methyl formate** has the chemical formula HCOOCH₃ (also C₂H₄O₂) and contains an ester functional group.
- Since both compounds share the same molecular formula (C₂H₄O₂) but have different functional groups (carboxylic acid vs ester), they are indeed functional isomers.

**Conclusion for Statement 1:** True.

### Step 2: Analyze Solubility of Acetic Acid and Methyl Formate
- Acetic acid is known to be soluble in water due to its ability to form hydrogen bonds with water molecules. The presence of the hydroxyl (–OH) group allows acetic acid to engage in intermolecular hydrogen bonding with water.
- Methyl formate, on the other hand, lacks a hydrogen atom bonded to an electronegative atom (like oxygen) that would allow it to form hydrogen bonds with water. Therefore, it is less soluble in water.

**Conclusion for Statement 1 (continued):** Acetic acid is soluble in water, while methyl formate is not. This part of the statement is also true.

### Step 3: Analyze Statement 2
- **Statement 2** claims that "intermolecular hydrogen bonding between solute and solvent decreases the solubility of solute in the solvent."
- This statement is misleading. Intermolecular hydrogen bonding generally increases the solubility of a solute in a solvent because it facilitates interactions between the solute and solvent molecules.
- In the case of acetic acid, the hydrogen bonds formed with water enhance its solubility. Conversely, if there is no possibility of hydrogen bonding (as in methyl formate), the solubility decreases.

**Conclusion for Statement 2:** False.

### Final Conclusion
- **Statement 1** is true: Acetic acid and methyl formate are functional isomers, and acetic acid is soluble in water while methyl formate is not.
- **Statement 2** is false: Intermolecular hydrogen bonding generally increases solubility, not decreases it.

Thus, the correct answer is that Statement 1 is true and Statement 2 is false.