Unit 4B- Solution Stoich - AP Chemistry

concentration

how much of something (solute) is dissolved in something else (solvent)

molarity (M)

unit of concentration equal to moles of solute/L of solution

molality (m)

a unite of concentration equal to moles of solute/kg of solvent

colligative properties (not assessed)

properties of solutions that depend upon the ratio. ofthe number of solute particles of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present

mole fraction

a unit of concentration that relates the moles of one component to the total moles (most commonly applied to gases)

steps for making a solution

1. calculate of (s) reagent to use & Q.T. into appropriately sized vol flask

2. fill vol fasl halfway w/ dih2o, swirl until dissolved

3. fill to graduated line w dih2o, cap and invert until homogenous

precipitation

mixing two aqueous solutions to form a precipitate per the solubility rules

neutralization

combining acidic and basic solutions together to form a salt and water

titrations

combining acidic and basic solutions together in exact molar ratios to form a completely neutral product

utilized as a tool for calculating the unknown molarity of an acid solution