Dissolving some pellets of NaOH in water would result in
Answer Details
When pellets of NaOH are dissolved in water, they ionize into Na+ and OH- ions, which are surrounded by water molecules. This process increases the entropy of the solution, since the Na+ and OH- ions are now dispersed throughout the solution rather than being confined to the pellets.
Therefore, the correct answer is: an increase in the entropy of the solution.