STUFF Flashcards
calorimetry is
the measurement of a heat that is transferred during a reaction or physical process
spefific heat is
heat transferred over (mass times the change in temperature) or Q=MCAT
calorimeter is
equipment used to measure the heat that is transferred during a reaction or physical process
electrolyte
ability to conduct electricity because the solute ionizes
perfect by mass formula
mass of solute (what’s being dissolved) over mass of solution (total) all times 100 to get a percent
percent by volume
volume of solute over volume of solution all times 100
dilution formula
volume of original solution times molarity of the original solution = volume of the diluted solution times molarity of the diluted solution
molarity =
moles of solute over liters of solution
delta H =
delta H (products) minus delta H (reactants)
enthalpy is
the amount of energy released or absorbed as heat by a system when the pressure is constant
exothermic graphs go ___ from reactants to products?
down
endothermic graphs go ___ from reactants to products
up
thermochemical equations
chemical equations that include the enthalpy change
factors that affect solubilities and rates of dissolution
temperature, agitation, surface area
solution that has the ability to conduct electricity because the solute ionizes
electrolyte solution
solution that does not conduct electricity because it does not ionize
non-electrolyte solution
solution that has less than the maximum amount of solute dissolved in a certain amount of solvent at a give temperature and pressure
unsaturated
solution that has contains maximum amount of solute dissolved in a certain amount of solvent at a give temperature and pressure
saturated
solution that has been heated and then slowly cooled so that more than the maximum amount of a solute can be dissolved in a certain amount of solvent at a given temperature and pressure
supersaturated
saturated will be what the line?
on the line
supersaturated will be what the line?
above the line
unsaturated will be what the line?
under the line
collisions among the solute and solvent molecules occur at a what rate when a solution is agitated
greater rate
what depends on the amount of solute dissolved in a given amount of solvent?
concentration
in molarity, you have to convert
ML TO LITERS
process of decreasing the concentration of a solution by adding additional solvent
dilution
a substance that dissolves in a solvent is
soluble in that solvent
a substance that does not dissolve in a solvent is said to be
insoluble in that solvent
two liquids that are soluble in each other are what, and if they’re not?
miscible, immiscible
the overall energy change that occurs during the solution formation process is called the
heat of solution
the solubility of a gas in any solvent decreases or increases as its external pressure increases
increases