Unit 4a Flashcards
MAstery
Avagadros Number
6.02X10^23
Concept of Avagadros Number
Equal to 1 mole and the GFM of a molecule.
GFM
The added mass of all of the elements in a molecule. Equal to one mole.
Percent Composition formula
(Given mass/Total Mass) X 100
Mole
Equal to the GFM of a molecule and Avagadros number.
Solution
A liquid mixture where the solute is distributed into the solvent.
Solute
The substance that is being dissolved.
Solvent
The substance that is dissolving the solute to form a mixture.
Mole Calculations
number of moles = given mass/gram formula mass
Diluted
A small amount of dissolved solute.
Concentrated
A large amount of dissolved solute.
Soluble
The ability for a substance to dissolve in another.
Insoluble
A substance that cannot dissolve.
WHy are Ionic solutes good conductors.
They are good conductors because their when dissolved, ions can move freely.
Molarity
Molarity is the number of moles of solute per liter of solution.
Molarity Formula
Molarity = moles of solute/liters of solution.
Compare solubility of Gas to solubility of solid
As temp increases, solids solubility rises while gasses’ goes down.
Dissolving Process of ionic and molecular solutes.
Ionic solutes separate into more than one particle when they dissolve, whereas molecular solutes separate with dipole dipole interactions and hydrogen bonding.
if the solute is ionic, the individual ions separate from each other and become surrounded by solvent particles
