Solutions Part 5

what is the point where the 2 curves meet at B called

eutectic point

what does the eutectic point represent

the lowest temprature at which the liquid solution can exist

what do solid dispersions do

enhance the dissolution of poorly soluble drugs

how does the enhanced dissolution effect work in drugs

the drug is mixed with a freely soluble carrier

what happens if the eutectic temprature is below room temperature

the mixing of two solids can result in the formation of a liquid

what are the two main types of a solid in a solid

• intimate crystalline mixture

• mixed crystal

how do you form intimate crystalline mixtures

below the eutectic point

what is the eutetic point

where liquid and solid phases have the same composition

whats the difference between raoults law and henry’s law

raoults law applies to the solvent in a solution

while

henrys law applies to the solute in a solution

raoults law (data book)

what are ideal solutions

solutions that obey raoults law

what is raoult’s law

the relative lowering of the vapour pressure is equal to the mole fraction of the solute in solution

binary solutions that do not obey raoult’s law are called…

non ideal solutions

describe the differences in henry’s law and raoult’s law in the table

henry’s law is obeyed by the solute when only a small amount is present

raoults law is obeyed by the solvent when a large amount of it is present

how to calculate total vapour pressure

pA + p0

whats the eutetic point used for

increasing the solubility of drugs