Understanding Volatility

Volatility refers to the ease with which a substance changes from a liquid to a gas (evaporates). Factors that influence volatility include:

* Intermolecular forces: Weaker intermolecular forces (like London dispersion forces) lead to higher volatility. Stronger forces (like hydrogen bonding) decrease volatility.

* Molecular weight: Lighter molecules have weaker intermolecular forces and tend to be more volatile.

Analyzing the Compounds

Let's examine each compound:

* Acetone (CH₃COCH₃): Has dipole-dipole interactions but no hydrogen bonding.

* Methanol (CH₃OH): Forms strong hydrogen bonds due to the presence of the -OH group.

* 2-Butanone (CH₃CH₂COCH₃): Similar to acetone, dipole-dipole interactions but no hydrogen bonding.

* t-Butyl chloride (CH₃)₃CCl: Has only London dispersion forces (weakest intermolecular force).

Conclusion

Based on the above analysis:

* t-Butyl chloride will be the most volatile because it has the weakest intermolecular forces.

* Acetone and 2-butanone will be more volatile than methanol because they lack hydrogen bonding.

Therefore, t-Butyl chloride is the most volatile compound among the given options.