CHY 103 Chapter 12: Chemistry Study Notes

• School: Ryerson University
• Department: Chemistry
• Course: CHY 103
• Professor: Sharonna Greenberg

Document Summary

When the barrier between the two gases is removed, each gas along with its kinetic energy - becomes spread out or dispersed over large volume. The effect of intermolecular forces: absence of intermolecular forces allows two substances to spontaneously mix to form a homogenous solution. Intermolecular forces are present between: the solvent and solute particles, the solvent particles themselves, the solute particles themselves. If solvent solute interactions are weaker than solute solute interactions and solvent solvent interactions, a solution may still form. (depending on the relative disparities between the interactions. If the disparity is small, then the tendency to mix results in the formation of a solution. The enthalpy of a solution ( (cid:3046)(cid:3042)(cid:3039)(cid:3041)) is the sum of the changes in enthalpy for each step: If the sum of endothermic terms is the about equal to the exothermic then the enthalpy ( (cid:3046)(cid:3042)(cid:3039)(cid:3041))will be. The increasing entropy will still drive the formation of a solution but the energy remains constant.