MOLARITY AND CONCENTRATION Flashcards
The most common measure of concentration in the laboratory is
molarity
moles of solute in moles, over liter of solution in
liter.
Molarity (M)
A homogenous mixture of two or more substances with each substance
retaining its own chemical identity.
Solutions
composes MAJORITY of the solution.
Solvent
Composes MINORITY of the solution.
Solute
if the solvent and solute DID NOT mix, it will give you a
heterogenous mixture, or a suspension.
The maximum amount of solute that will dissolve in a given amount of
solvent under a given set of conditions.
Solubility
Most solids become more soluble in water with _______temperature.
increasing
gas solubilities in water________ with increasing temperature.
decrease
A solution that contains less than the maximum amount of solute that
can be dissolved under the conditions at which the solution exists.
Unsaturated
A solution that contains the maximum amount of solute that can be
dissolved under the conditions at which the solution exists.
Saturated
An unstable solution that temporarily contains more dissolved solute
than that present in a saturated solution.
Supersaturated
Maximum amount of solute added to the beaker
6 moles
You can remove some solute with the drain faucet or you can remove all of the solute by clicking?
Remove Solute
contains concentrated solution of the solute
The dropper
All of the solutions are at 25 PC except the drink mix, which is at?
20°C.
When the moles of solute per liter of water is _______ the saturation point, the solution will saturate and small crystals will form at the bottom of the beaker:
above
_______solvent = Increase concentration
Decrease
Solubility of each solution listed was calculated at 25”C, except for ______; and Drink mix, which were based on data taken at 20 degrees.
AuCl
A tone plays that changes with the _________of the concentration of the solution to emphasize the change in concentration by either the amount of solute or volume of the solution, decreasing in pitch with increasing concentration.
magnitude
______solute = increase molarity
Decrease volume =________ molarity
Increase
M and L____ relationship
inverse
M and mol______ relationship
direct
Before starting,____ the tank from previous procedure.
drain
Set the volume of water to_______ and dip the probe in the solution.
300 mL
