The solubilities of different solutes in a given solvent can be compared by

Correct answer: plotting their solubility curves on the same axes.

Explanation: To compare solubilities fairly, all curves must share the same temperature and solubility scales (same axes). This lets you directly see which solute is more soluble at any given temperature.

• On separate axes – Incorrect. Different scales make visual comparison unreliable.
• Some on the x-axis and others on the y-axis – Incorrect. Curves are plotted with temperature vs. solubility; mixing axes like this is meaningless for comparison.