University:
York University
Course:
CHEM 1001 | Chemical Dynamics
Academic year:

2022
Views:

46

Pages:

2
Author:

Niklas

03/21/2072 03/13/2022 Chapter 17 • like dissolves like - polar dissolves polar (and ionic) - nompolar dissolles nompolar • dissolution is most probable when the intermolecular forces of the solvent of solute are similar -miscible - soluble in all propactions * immiscible - not soluble the more hydrocerbons that are added to a chain, the las it dissolves in water of the more # dissolves in nompolar solvents • Dissolution of gases in water * molecule, malecule cap - reaction is exolhermic - AH = O for He because it has only dispersion forces • Henry'S Law → Pgas i AC - the higher the presume, the more gas dissoltes • Calligative Propertos of Solutions - coligative propectes → depend only on the number of partides, not what they'e made of - dissating a salute in meter extends its liquid range •ropor pressure lowering * frozzing point lowers " bailing paint gets higher • osmotic pressure - comes directly from entropy of mising * Enthalpy of dissolution: nint) •43 • Vapor pressure *if we dissolre a non-volatile saluke the vapor pressure of the solment is lowered 03/23/2022 83/25/2012 Chapter 17 •Xur mole fraction → mates solvent /total 7 ol moles - unitless - highest vapor pressure = most amount of endicated selute • Vopor pressure with too volatile solvents - ideal salution → the strength of A-B intereston is similar to 1-1 * 8-8 3= sit of mising is zero • Raab Tow •Debris Loss of Partial Presun • Yapor is aluays enriched in the more volatite component •Vapor Pressure vith namideal Solutions -if at of mising is unferocable - lines on gogh boring o •arestope • Freezing Point Depression of Boiln paint elevatien - adding salt lowers melting point at maises freeing paid - madelily » mots of solute per kilogren of solvent where i polity 4н.. - kg: MUXBTI •Osmotic pressure → extomal pressure that needs to be applied to balance the pressure from the inwerd flow of walex Put = Tt (internal asnotic pressure) M: DEr + # = melanity - 0.08206