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Unformatted text preview: Hydration of Na+ : Steps 2+3 : Na + Cl –(H2O) Na + Cl Delta H solution = Delta H1 + Delta H2 + Delta H3 Delta H1=C.Lattice (+ must be) Delta H2 + Delta H3 = Delta H hydration (- must be) Hydration “sphere” – H2O molecules encapsulating the corner Chlorine ions in salt crystals What factors influence dissolving? All spontaneous changes need a negative delta G Delta G = Delta H – T*DeltaS [Rare] H negative, T*delta S positive always have negative delta G at all temperatures [Usually] H positive , S positive non-spontaneous at low temperature, spontaneous at high temperatures Driving force for making solutions : entropy increases...
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This note was uploaded on 11/18/2010 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas.
- Spring '07