exam 3 Flashcards
enthalpy driven
a negative enthalpy reactions (/\H’rxn)
entropy driven
a positive entropy value (+)33333332222211
if Ln K > 0, K is
K > 1
if Ln K < 0, K is
K < 1
if Ln K = 0, K is
K = 1
Equation for Gibbs Free Energy
G = H - TS
if /\G’sys < 0, it is (spontaneous or nonspontaneous)
spontaneous
if /\G’sys > 0, it is (spontaneous or nonspontaneous)
nonspontaneous
when K > 1 it favors (reactants or products)
products
when K < 1 it favors (reactants or products)
reactants
ΔG (naught) equation
/\D (naught) = -RTlnK
if Q < K, the reaction proceeds
foward
if Q > K the reaction proceeds
in reverse
internal energy equation
/\E = q + w
finding work equation
w = -P/\V
enthalpy change equation
/\H = /\E + /(PV)
/\H < O (exothermic or endothermic)
exothermic
/\H < O (exothermic or endothermic)
endothermic
heat transferred equation
q = Cs x M x /\T
q > 0 (heat absorbed or released)
heat absorbed
q < 0 (heat absorbed or released)
heat released
q cal =
-q rxn
equation for calculating temperature
T = H/S
/\S’surr =
-q reversible/T
