CH 101: EXAM 3

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44 Cards in this Set

Front	Back
network covalent solids	C,Si,Ge ZnS,SiO2
Heat	q
work	w
△Esys	q+w
enthalpy	△H
endothermic	△H +
exothermic	△H -
form bond	exothermic
break bond	endothermic
bond dissociation energy	D
△H =	∑D(broken bonds) - ∑D(formed bonds)
entropy	△S
free energy	△G
△G =	△H - t△S
△G -	spontaneous
△G +	non-spontaneous
△G0	at standard state
△G0 -	spontaneous forward mostly products at equilibrium extensive
△G0 +	non-spontaneous forward spontaneous reverse mostly reactants at equilibrium not extensive
k	rate constant
K	equilibrium constant [products]coeff/[reactants]coeff
K>1	mostly products extensive △G0-
K<1	mostly reactants not extensive △G0+
molarity	M moles of solute/liters of solvent
△Hsolution =	△Hsolute + △Hsolvent + △Hmixing
△G -	dissolving is spontaneous
△G +	dissolving is not spontaneous insoluble
△G0-	maximum solubility > 1M more solid will dissolve
△G0 +	maximum solubility < 1M no more solid will dissolve
alkane	all C-C
alkene	some C=C
alkyne	some C-C triple bonds
C	4 shared pairs 0 lone pairs
N	3 shared pairs 1 lone pair
O	2 shared pairs 2 lone pairs
halogens	1 shared pair 3 lone pairs
C-H bonds	hydrophobic
O-H bonds	hydrophilic
N-H bons	hydrophilic
hydrocarbons	hydrophobic
sugars	hydrophilic
fats	hydrophobic
acetone	hydrophilic/hydrophobic
alcohols	hydrophilic/hydrophobic