CHEM H2B Chapter 14: Solutions
Document Summary
Textbook: chemistry structure and properties by nivaldo j. tro: solutions: mixtures in which atoms, ions, & molecules intermingle on the molecular & atomic scale, ex: ocean water, gasoline, air. Aqueous solutions: water is the solvent & a solid, liquid, or gas is the solute. The formation of a solution doesn"t necessarily lower the potential energy of its constituent particles. Entropy: measure of energy randomization or energy dispersal in a system: mixture of 2 gases has a greater energy dispersal (i. e. greater entropy) than the separated. Ex: when argon and neon mix, their potential energy remains unchanged components. Reason that 2 ideal gases mix: the pervasive tendency for energy to spread out, or disperse, whenever it is not restrained from doing so. In the absence of im forces, 2 substances spontaneously mix to form a homogeneous solution. Solution generally forms if the solvent-solute interactions are comparable to, or stronger than, the solvent-solvent interactions & the solute-solute interactions.
