Solutions Flashcards
solvent
dissolving medium in solution
solute
substance which is dissolved in solution
substance of lesser quantity in solution
solute
size of particles in solution
small enough to travel through filter paper
suspension
mixture with particles that are too large to settle out unless it is constantly stirred or agitated
size of particles of suspension
large enough to be separated by filter paper
separation of particles in suspension
separated by filtration
colloid
mixture with particles that are intermediate in size between those in solutions and suspensions
size of particles in colloid
small enough to travel through filter paper
dispersed phase
phase that is composed of colloidal particles that are distributed through another phase
dispersing medium
phase in which the colloidal particles of the dispersed phase are distributed
emulsion
type of colloid composed of 2 or more liquids that are normally immiscible
held together by emulsifying agent
tyndall effect
scattering of light beams by colloidal particles dispersed in transparent medium
used to differentiate between solutions and colloids
Brownian motion
random motion of particles suspended in fluid
results from collision with fast-moving molecules in fluid
electrolyte
solution that contains ions
conductive of electricity
processes which form electrolytes
ionization
dissociation
nonelectrolyte
solution that does not contain ions
not conductive of electricity
methods to increase rate of dissolution
increasing surface area of solute (crushing a solid solute)
agitating solution (stirring or shaking)
heating solvent
solution equilibrium
solubility equilibrium
physical state in which opposing processes of dissolution and crystallization of solute occur at equal rates
saturated solution
solution that contains maximum amount of dissolved solute at given temperature
unsaturated solution
solution that contains less solute than saturated solution under existing conditions
supersaturated solution
solution that contains more dissolved solute than saturated solution under existing conditions
creation of a supersaturated solution
heated saturated solution is cooled (which lowers solubility) so that excess solute remains in solution (as long as it remains undisturbed)
effect of disruption of supersaturated solution
rapid formation of crystals by excess solute
solubility
amount of substance required to form saturated solution with specific amount of solvent at specified temperature
conditions that must be specified when expressing solubility
temperature
amount of solvent
pressure (for gases)
type of solvent
“like dissolves like” rule
rule used to predict whether substance will dissolve in another substance
refers to type of bonding and intermolecular forces
compounds which dissolve in water
compounds with polar covalent bonds
compounds with ionic bonds
hydration
solution process with water as solvent
hydrate
crystals that incorporate water molecules
formed by ionic substances
immiscible
insoluble
used when discussing liquids
miscible
soluble
used when discussing liquids
Henry’s law
states that solubility of gas in liquid is directly proportional to partial pressure of gas on surface of liquid
named after William Henry
effervescence
rapid escape of gas from liquid in which it is dissolved
release of bubbles or foam
solvated particle
solute particle that is surrounded by solvent molecules
heat of solution
net amount of heat energy absorbed or released when specific amount of solute dissolves in a solvent
concentration
measure of amount of solute in given amount of solvent or solution
dilute solution
solution with relatively small amount of solute in solvent
concentrated solution
solution with relatively large amount of solute in solvent
molarity
M
number of moles of solute in 1 liter of solution
expression of concentration
molarity formula
molarity = (moles of solute) ∕ (liters of solution)
c = n ∕ v
molality
𝓂
number of moles of solute in 1 kilogram of solvent
molality formula
molality = (moles of solute) ∕ (kilograms of solvent)
𝓂 = n ∕ m
percent of solution formula

anhydrate
substance that remains after water is removed from hydrate