Molarity. Molality. M.F. Dilution
1 mole equivalents
6.02 x 10^23 R.P. AMU in grams 22.4 L at STP
Solute definition
Dissolved substance that can be a salt, base, or acid
Solvent definition
Dissolving medium that's almost always water but can be something else
Mole fraction definition
Ratio of moles of solute/solvent in solution to total number moles of solute and solvent
Solute examples
Salt is something with ionic bond. Acid starts with hydrogen (H). Base ends with Hydroxide (OH)
Homogeneous mixture definition
Same and uniform throughout
Dilution formula
(Molarity1)(volume1) = (Molarity2)(volume2)
Molality formula
(Moles solute) divided by (1 KG solvent or 1000 g solvent)
Mole fraction formula
(Moles solute/solvent) divided by total moles of solutes and solvent
Molarity for concentrated sulfuric acid (H2SO4)
18 M
Concentration expression shows
Amount solute in specified amount solvent/solution
Solution definition
Consists of dissolved substance and dissolving medium
2 liquids solution
Excess liquid is solvent
Density/Specific Gravity units
G/ml
Molality other name
Molal concentration
3 Concentration expression ways
Molarity. Molality. Normality
Mole fraction addition
Mole fractions add to give 1
Molarity formula
Moles of solute divided by 1 liter of solution
Molality unit
Moles per kilogram of solvent (mostly)
Molarity units
Moles per liter of solution
Dilution alterations
Moles solute DONT CHANGE! Moles solute before and after solution are SAMEEE!
Mole fraction unit
No real unit since moles cancel so just say mole fraction
Solute state of matter
Not always solid. Can be gas or liquid
Molarity definition
Number of moles of solute contained in 1 liter of solution
Molality definition
Number of moles of solute dissolved in 1 KG or 1000 G solvent
2 types glassware with dilution
Pipet. Volumetric flask
Dilution definition
Process of adding WATER to achieve desired molarity for particular solution
Example of homogeneous mixture
Solutions
Stock solution definition
Solutions in their concentrated form
Dilution with concentrated stuff
Use the 1s!