CHEM 1A03 Chapter Notes -Enthalpy, Hydroxylapatite, Solvation

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: David Brock

Document Summary

Water chars: polar effects -> solvent to salts, affects protein folding, determines what bio- accumulates, how molecules bind to receptors, high boiling point relatively speaking. Good reaction medium, makes surface area for reactions: universal solvent, hydrogen bonding: results from dipole moment in h2o. Each molecule can form 4 h- bonds: hydration: solubilization of polar or ionic solutes, ion-dipole interactions: if gaseous na+ or cl- are put in water, e is released, hydration shell: Strong electrolyte: dissolves completely in water, conductivity. Equilibrium: reaction quotient q , if ma(aq) + nb(aq) xc(aq) + yd(aq) o. Q= : q appears unitless b/c all pressures & conc. are relative to reference values, solute: conc. mol per liter is used, gas: pressure. 1 kelvin = 273. 15 c r for bar: 0. 08314: activity of pure solids & liquids is 1, so we can ignore them whilst setting up the equilibrium constant, k has the same format as q .