Solution

(Lecture id-1116)

TOPICS & OBJECTIVES

1010 - Solvation
    1010 - Provide and apply the definitions of solution, solute, solvent and miscible.
    1020 - Know entropy, the pervasive tendency of energy to spread out, causes substances to try and mix.
    1030 - Know strong IMF between solvent molecules can prevent solutes from dissolving (unless the solute has similar IMF).
    1040 - Know strong IMF between solute molecules can prevent solvents from absorbing them (unless the solvent has similar IMF).
    1050 - Use molecular structure to predict solubility of one substance in another.
    1060 - Use the "like dissolves like" simplification to identify substances that will form mixtures.
 
1020 - Energetics
    1010 - Define heat of solute and heat of solvent, know these are always endothermic.
    1020 - Define heat of mixing, know this is always exothermic.
    1030 - Define heat of solvation, identify when it will be exothermic and when it will be endothermic.
    1050 - Define heat of hydration, know this is the sum of heat of mixing and heat of solvent when the solvent is water.
    1060 - Relate lattice energy to heat of solute.
    1070 - Given a substances lattice energy and heat of hydration, determine heat of solvation for that substance in water.
 
1030 - Saturation
    1005 - Know dissolving and recrystallizing are an equilibrium process.
    1007 - Understand that when rates of recrystallization and dissolving are equal the solution is saturated.
    1010 - Know dissolving and recrystallizing of most solids (not all) is directly proportional to temperature.
    1015 - Explain what it means for a solution to be super saturated.
    1020 - Know solubility of gases is inversely proportional to temperature.
    1030 - Know the solubility of gases is directly proportional to the partial pressure of that gas over the solution.
    1040 - Using Henrys law ( S = kH P ) relate gas solubility to partial pressure of the gas over solution.
    1050 - Know the value of Henrys constant is proportional to temperature and specific to the solute.
    1430 - Use Raoults law to relate the vapor pressure of a pure substance to the mole fraction of that substance in solution and vapor pressure of that solution.
 


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