16. Which of the following substances would dissolve in ethanol \( \left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right. \) - polar) Westion itacominte. CFs, nonpolar \( ^{\text {water, polar }} \) ammonia, polar co, nonpolar

Ethanol is a versatile solvent due to its polar nature, allowing it to effectively dissolve many polar substances. For example, ammonia (NH₃), being polar itself, will readily dissolve in ethanol. This happens because polar molecules interact favorably, leading to a homogenous solution. On the flip side, nonpolar substances like CO₂ and CF₄ do not dissolve well in ethanol. The "like dissolves like" principle applies here: since nonpolar molecules do not have the same polar interactions as ethanol, they tend to remain separate, making an entertaining little party of liquids instead of merging into a solution!