IMG_0005_NEW_0006

IMG_0005_NEW_0006 - &(A(orD3):2J x 10-32 Al(OH)r(s) -...

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h, TODAY'S LECTURE "Ghemical Equilibria" . Solubility Equilibria . Solubility Products . Le Chdtelier's Principle . Effect of Catalysts $qluhility Equilibria 6',a1ie\th3 Ionic salts dissolved in water are in equilibrium between the solid and the ions Zn(OH), (s) . Equilibriumconstant: . solubility produsl: K,o =1ztf*11oH-12 Saturated solution : no more solid can be dissolved Solubility : amount of the salt that dissolves in water Amount of solid present does not change concentration of saturated solution lzn2.lloH-1'? t\:- lz(orD,l is defined for a saturated solution Solving l(o Problems Identify ions in solution Al(Offr(s) -> Al3*(aq)and OH-(aq) Write balanced equilibrium equation A(OfDr(s) =: Al3+(aq)+ 3OH-(aq) Write expression for K,o: Kro: O Solve:For solubility given Ksp (or Ksp given solubility)
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Unformatted text preview: &(A(orD3):2J x 10-32 Al(OH)r(s) - 1.J3*(aq)+ 3OH-(cq) *, ?o +x +3X hriq=l 3X- 2x7o4v fs"rG:'>-' >*;f . rrl.L-l Convertto required ^O. "qryr-_ e.g. moUL + stL E {) = (x) .(sxl, : o/ xY t --hlv;l th Le Ghitelier's Principle "ll/hen an equilibrium system is subjected to a change of conditions the system responds by attaining a new eqailibriumthat partially ofrsets the impact of that change" In other words. .. Wenever you try to change o system ot equilibriur4 it tries to do the opposite. Change in conditions: 1) Adding or removing a reactant or product 2) Changing the pressure (for systems involving gases) 3) Changing the temperature Qualitative predictions on changes to equilibrium system...
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This note was uploaded on 12/27/2011 for the course CHEM 122 taught by Professor Williams during the Fall '10 term at Simon Fraser.

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