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exam 2
chapter 12
17
Chemistry
Undergraduate 4
03/27/2012

Additional Chemistry Flashcards

 


 

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Term
"Likes dissolve Likes"
Definition

Ionic solids generally dissolve better in Polar solvents like water

 

whereas a molecular compound usually favors non-polar solvents.

 

moleculues with OH- groups in its structure will dissolve in water due to hydrogen bonding with water enhancing solubility

Term
Percentage % by mass
Definition

(g of solute/ g of solute + g of solvent) * 100%

 

Term
Molarity (M)
Definition
(Moles of solute/ volume of solution in (L))
Term

pure solvent vs. solution

Definition

Pure solvent             Solution

 

vapor pressure-  higher                    lower

 

boiling point-       lower                     higher

 

frezzing point-    higher                   lower

Term
Molality (m)
Definition
=( mole of solute/ mass of solvent)
Term
ΔT=K* molality (m)
Definition

ΔT= difference of two frezzing points or the differnce of two boiling points

 

K= the constant

 

m=molality (mole of solute/kg of solvent)

Term

solvent-solute interations > solvent-solvent and solute- solute interations

Definition
 solution forms
Term

Solvent- solute interations= solvent-solvent and solute-solute interations

Definition
solution forms
Term

solvent-solute interations< solvent-solvent and solute-solute interations

Definition
solution may or may not form, depending on relative disparity
Term
Osmosis
Definition
The movement of wayer from low solute concentration to hight solute concentration through a semipermiable membrane, thus generating osmotic pressure
Term
ionic solutions
Definition
ionic compounds dissociate in soulution thus doubleing the concentration
Term
colloid
Definition

a mixture in which a dispersed substance is finely divided in a dispersing medium.

 

size between 1nm-1000nm

Term
phase diagram
Definition
[image]
Term
rate law
Definition
Rate=k(A)m(B)n...
Term
1st order
Definition
concentration changes and the rate also changes at the same magnitude
Term
0th order
Definition
concentration changes however rate remains unchanged
Term
2nd order
Definition
when concentration changes and rate change at a greater magnitude
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