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Samenvatting Chemie 2 - Van buiten te blokken dingetjes voor het examen

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Drie pagina's met de zaken die je moet van buiten kennen voor het examen. Handig om af en toe erbij te nemen tijdens het studeren. Ik blokte dit uit mijn hoofd zodat ik er delen van kon noteren op mijn kladblad tijdens het examen.

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CHEMIE

n= c= n = aantal mol (mol)
m = massa (g)
M = molaire massa (g/mol)
ρ= c= . V = volume (l)
ρ = massadichtheid (g/ml)
N = n.NA ngec = nverd N = aantal deeltjes (-)
c = concentratie (mol/l) [ ]
VF = cgec / cverd (c1.V1) + (c2.V2) = c3.V3

p.V=n.R.T .
R = gasconstante (8,31 )
.
P = druk (kPa/Pa)
% rendement = x 100% T = temperatuur (Kelvin)(van °C naar Kelvin: +273,15)

v = reactiesnelheid (mol/L.s)
aA + bB  cC + dD éénstaps v = k[A] a [B] b Snelheidsvergelijkingen delen
Bv. v2 k[A 2 ] x [cte] y
v = k[A]x [B]y… meerstaps x=? exp. [A] # =
y=? exp. [B] # v1 k[A 1 ] x [cte] y
aA → producten




aA + bB ⇄ cC + dD v1 = v2 NERNST

Kc↑ kr ↑ DUS evenwicht rechts
Kc↓ kl ↑ DUS evenwicht links


Qc < Kc waarde stijgt -> reactie gaat naar rechts
Qc > Kc waarde daalt -> reactie gaat naar links


CHATELIER
C verandering + of - C verandering V (indampen/ verdunnen) of p (g)
 Toevoegen component → naar andere kant
 V verhoging (= verlagen druk (gas)) (= verdunnen)
 Verwijderen component → naar kant van component
→ evenwicht naar kant met grootste aantal moleculen
T
 V verlaging (= verhogen druk (gas)) (= indampen)
 Verhoging → ev. verschuift in endotherme zin → evenwicht naar kant met het kleinste aantal moleculen
 Verlaging → ev. verschuift in exotherme zin Katalysator → Geen invloed

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