Unformatted text preview: A\ Solid-Liquid — based on intermolecular forces Forces created between solute and solvent must be comparable in
strength to the forces destroyed within both the solute and the solvent. Examine Table 13.2 and sample problem l3.l Do foilowmup problem 13.}, on page 493. Note: Gas- Liquid solutions — the need to have oxygen slightly soluble in
water Gas-Gas solutions — can vary by choice Solid—Solid solutions ~ alloys of steel 13.2 I am on] coverin a e 498 495 — 502 Sodium Stearate —the salt of stearic acid C17H35COON3 Nonpolar end interacts with nonpolar dirt (wax) on your hands, polar ‘end interacts with water and a micelle is formed that is carried away by the water. 13.3 Heat of Solution It takes heat to break apart a solute and a solvent but heat is given off
when the two come together. The heat to break apart the solvent
molecules and that for mixing of the solvent with the solute can be called heat of hydration. Hydration of an ion is exothermic forming a strong ion—dipole force. ...
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- Fall '08