Solutions Flashcards
Solute
being dissolved: the thing you have less of
Solvent
doing the dissolving/ have more of it.
Saturated solution
: having too much solute, and won’t disolve any more.
Supersaturated solution
dissolving more then can typically be disolved.
Explain dissolving: “like dissolves like
Polar disolves polar. Nonpolar disolves nonpolar. Examples are water dissolving salt, water and salt are both polar, so they can dissolve and make a solution
Dilute
Not enough solute
Concentrated
Lots of solute
Formula for molarity
Moles of solute/liters of solution
Dissociation
Happens in ionic compounds, they split into ions
Ionization
Takes place in covalently bonded…, don’t split the molecule into atoms
How to increase the rate of dissolution
-Heat it up -stir(agitate) it -increase the surface area, i.e. break/smash it.
What is the formula for percent composition
Percent composition= mass of solute/mass of solution
How to deal with the different ways of setting up molarity and percent composition problems.
Just ad a variable (x) then use algebra… It really isn’t that bad. Like at all…
How to tell if a compound is polar or non polar etc (For determining like disolves like)
Subtract electronegativity | if between 0.0 and 0.2 = Nonpolar covalent 0.3 and 1.7 = polar covalent 1.8 and 4.0 = ionic
Solution
a homologous mixture (uniform throughout) Phases: solids/liquid, gas/liquid, liquid/liquid, gas/gas,
Which compound dissolves the most at 60* Celsius.
NaNo3
Which temperature does KNO3 need to be at to dissolve roughly 115 grams
60*celcius
How many grams of Na2SO3 will dissolve at 30*celcius
Roughly 70 g
