Final answer:
KCl is more soluble in H2O (water) because it is a polar solvent capable of dissolving ionic compounds, whereas CCl4 is nonpolar and not effective for dissolving KCl.
Step-by-step explanation:
The correct answer to the question 'Which liquid is more likely to be more soluble for KCl, H2O, or CCl4, and why?' is A) H2O, because it's a polar solvent. Solubility of a compound like KCl, which is an ionic compound, is significantly influenced by the polarity of the solvent. Water (H2O) is a polar solvent, which means it has a positive and negative end, making it very effective at dissolving ionic compounds like KCl. On the contrary, carbon tetrachloride (CCl4) is a nonpolar solvent, and like dissolves like, therefore, KCl would not be expected to dissolve well in CCl4. The differences in solubility are due to the types of intermolecular interactions; polar solvents like water can disrupt the ionic bonds in KCl leading to solvation, whereas nonpolar solvents lack the necessary polarity to do so.