Given below are two statements labelled as Assertion (A) and Reason (R)
Assertion : The haloalkanes are slightly soluble in water.
Reason: Energy is required to overcome the attractions between the haloalkanes molecules.
Select the most appropriate answer from the options given below:

Options

A. Both A and R are true R is the correct explanation of A.
B. Both A and R are true R is not the correct explanation of A.
C. A is true but R is false
D. A is false but R is true

Answer

To solve the question, we need to analyze the Assertion (A) and Reason (R) provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "The haloalkanes are slightly soluble in water."
- Haloalkanes are organic compounds that contain carbon, hydrogen, and halogen atoms. Their general formula is R-X, where R is an alkyl group and X is a halogen (like Cl, Br, or I).

2. **Analyzing the Solubility**:
- Solubility in water depends on the polarity of the molecules. Water is a polar solvent, and for a substance to dissolve in it, there must be a favorable interaction between the solvent and solute.
- Haloalkanes have a polar C-X bond due to the electronegativity difference between carbon and halogens, but they also have a non-polar hydrocarbon (alkyl) part. This results in haloalkanes being only slightly soluble in water.

3. **Understanding the Reason**:
- The reason states that "Energy is required to overcome the attractions between the haloalkanes molecules."
- When haloalkanes are to dissolve in water, the intermolecular forces between haloalkane molecules must be overcome. This requires energy.

4. **Energy Considerations**:
- To dissolve haloalkanes in water, energy is needed to break the intermolecular forces in haloalkane molecules and also to break the hydrogen bonds in water.
- The energy released when new interactions are formed between water and haloalkane molecules may not be sufficient to compensate for the energy required to break the existing interactions, leading to their low solubility.

5. **Conclusion**:
- Both the assertion and the reason are true.
- The reason correctly explains why haloalkanes are slightly soluble in water, as the energy required to break the attractions in haloalkanes is significant.

### Final Answer:
The correct option is that both the assertion and reason are true, and the reason is the correct explanation of the assertion.