Final answer:
The 1.0 M solution that contains the most particles is C) 1.0 M C₆H₁₂O₆ (glucose).
Step-by-step explanation:
The 1.0 M solution that contains the most particles is C) 1.0 M C₆H₁₂O₆ (glucose).
When determining the number of particles in a solution, it is important to consider the dissociation of the compounds. Glucose, being a non-ionic compound, does not dissociate into separate solvated ions. Therefore, the concentration of solute particles in a 1.0 M glucose solution remains 1.0 M.
In contrast, NaCl, KNO₃, and HCl are ionic compounds that dissociate into solvated ions when dissolved in water. As a result, a 1.0 M solution of NaCl contains a net particle concentration of 2.0 M, while the 1.0 M KNO₃ solution and the 1.0 M HCl solution both contain a net particle concentration of 1.0 M.