All equations Flashcards
SN2 rate equation
Rate= K [R-Hal][Nu]
SN1 rate equation
Rate= K[R-Hal]
Total internal energy of a system
U= W + q
Kinetic energy
Ekin= 1/2 mV2
work
w = f x d
Newtons law of force
F = m x a
Coulombs law
F = Kq1q2 / r2
energy
E = P x V
Change in enthalpy
∆H = ∆U + p∆V
entropy
S= KB ln (omega)
Change in entropy
-∆S= ∆H / T
spontaneous reaction with entropy
∆Stotal = ∆Ssystem + ∆Ssurroundings >0
Gibbs free energy
∆G = ∆H - T∆S
Probability of number of particles in a system
P (N, NL) = N! / (N - NL)! x 0.5N
spontaneous reaction with free energy
∆Gtotal = ∆Gproducts - ∆Greactants <0
Kc

Q

Van’t Hoff isotherm
∆G0 = - RT ln K
K = e(∆G^0 / RT)
∆G
∆G = - nfe
the two versions of the Nernst equation
E= Eø - (RT/ nF) ln Q (Q= [red]/[ox])
E= Eø + (RT/nF) ln Q (Q= [ox]/[red])
equations relating pH and H+
PH= -log10[H+]
H+= 10-pH
Nernst equation generalising the pH effect
E = (RTV/nF) x (-pH)
Rate of collision
πr2VR[A][B]
collision theory law and constant
Rate= K [A][B]
K= πr2VRe(-Ea/ RT)

