Electrolyte solutions generally behave less ideally as the solute concentration increases.

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Quizplus · Accepted Answer

This is because at higher concentrations, the solute particles become closer together, leading to more frequent collisions and interactions between them, and with the solvent molecules. This can disrupt the orderly arrangement of solvent molecules around individual solute particles, and cause deviations from ideal behavior. Additionally, the presence of multiple solute ions can lead to ion-ion interactions, which can also contribute to non-ideal behavior.

Electrolyte Solutions Generally Behave Less Ideally as the Solute Concentration