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Periodiek systeem der elementen
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Reactiesnelheid
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Chemisch
evenwicht
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Thermodynamica
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Elektrochemie
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Spectrometrie
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pH
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Concentratie
en dichtheid
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Periodiek
systeem der elementen
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Element
naam
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Atoomnummer
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Atoommassa
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Elektronenconfiguratie
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Subschillen
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Oxidatietoestanden
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Reactiesnelheid
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Reactie
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mA
+ nB → qC + rD
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1e
orde reactie
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A → …
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s =
k [A]
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ln
([A]0 / [A]) = k t
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2e
orde reactie
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2 A → …
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s =
k [A]2
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1 /
[A] - 1 / [A]0 = k
t
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2e
orde reactie
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A +
B → …
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s =
k [A] [B]
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1 /
([A] -[A]0) ln
([A] [B]0 /
[A]0 [B]) =
k t
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Verband
reactieconstante en activeringsenergie (Ea)
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kT
= Ae -Ea/RT
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Ea = R T1 T2 / (T1 - T2) ln (kT1 / kT2)
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Chemisch
evenwicht
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Homogeen
systeem
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mA
+ nB ↔ qC + rD
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Concentratiebreuk
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Bij
evenwicht:
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Qc = [C]q [D]r / [A]m [B]n
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Qc = Kc
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Voor
gasevenwichten
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Qp = pcq pdr / pam pbn
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Qp = Kp
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Thermodynamica
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Verandering
van gibbsenergie
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ΔG
= ΔH - T ΔS
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(vrije enthalpieverandering)
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Bij
benadering is
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ΔG0 (T) = ΔH0 (298) - T ΔS0 (298)
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Verband
evenwichtsconstante
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ΔG0 (T) = - RT ln K
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en verandering gibbsenergie
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Elektrochemie
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Vergelijkingen
van Nernst voor de halfreactie
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Red
↔ Ox + n e-
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Nernst
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V =
V0 + (RT / nF) ln
(Ox / Red)
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Nernst
bij 298 K
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V =
V0 + (0,059 / n)
ln (Ox / Red)
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Spectrometrie
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Wet
van Lambert-Beer
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Extinctie
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E =
ε [A] L
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Waarin
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E =
- log (I / I0)
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pH
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pH
|
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pH
= - log (H30+)
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Concentratie
en dichtheid
|
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Concentratie
|
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c =
n / V
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Dichtheid
|
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ϱ = m / V
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