Final answer:
A one molal NaCl solution does not have the same osmolality as a one molal glucose solution due to the difference in dissociation of the solute particles.
Step-by-step explanation:
The statement is False. A one molal NaCl solution does not have the same osmolality as a one molal glucose solution.
Since NaCl dissociates into two ions in solution (one Na⁺ and one Cl⁻), while glucose does not dissociate, the NaCl solution will have twice as many dissolved particles compared to the glucose solution. Therefore, the osmolality of the NaCl solution will be higher than that of the glucose solution.
For example, an isotonic solution of NaCl has an osmolality of 0.32 osmol/L, while an isotonic solution of glucose has an osmolality of 0.31 osmol/L.