The boiling point of `C Cl_(4)` higher than that of `CHCl_(3)` because `:`

Options

A. `937.3 Å`
B. `1025 Å`
C. `1236 Å`
D. None of these

Explanation

To understand why the boiling point of CCl₄ (carbon tetrachloride) is higher than that of CHCl₃ (chloroform), we need to analyze the molecular structure and intermolecular forces present in each compound.

### Step-by-Step Solution:

1. **Identify the Molecular Structures**:
- CCl₄ (carbon tetrachloride) has a tetrahedral structure with one carbon atom bonded to four chlorine atoms (Cl).
- CHCl₃ (chloroform) has a tetrahedral structure as well, but it consists of one carbon atom bonded to three chlorine atoms and one hydrogen atom (H).

2. **Determine the Types of Intermolecular Forces**:
- Both CCl₄ and CHCl₃ exhibit Van der Waals forces (dispersion forces) due to their molecular structures.
- CHCl₃ also has dipole-dipole interactions because of the polar C-Cl bonds and the presence of the hydrogen atom, which creates a net dipole moment in the molecule.

3. **Compare the Strength of Intermolecular Forces**:
- CCl₄ is a nonpolar molecule, and its intermolecular forces are primarily Van der Waals forces, which can be relatively strong due to the larger size and mass of the chlorine atoms.
- CHCl₃, being polar, has dipole-dipole interactions in addition to Van der Waals forces. However, the presence of hydrogen, which is less electronegative than chlorine, leads to a weaker overall dipole moment compared to the dispersion forces in CCl₄.

4. **Analyze the Boiling Points**:
- The boiling point of a substance is influenced by the strength of its intermolecular forces. Stronger intermolecular forces generally lead to higher boiling points.
- In this case, the Van der Waals forces in CCl₄ are stronger than the combined forces in CHCl₃, leading to a higher boiling point for CCl₄.

5. **Conclusion**:
- Therefore, the boiling point of CCl₄ is higher than that of CHCl₃ primarily due to the stronger Van der Waals forces in CCl₄ compared to the dipole-dipole interactions present in CHCl₃.

### Final Answer:
The boiling point of CCl₄ is higher than that of CHCl₃ because the Van der Waals forces of attraction in CCl₄ are stronger than the dipole-dipole interactions in CHCl₃.