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Summary AQA A level chemistry equilibrium full revision notes
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A helpful and comprehensive set of revision notes covering the entire sixth unit of AQA A level chemistry- equilibrium
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Equdbruum6. EQauILIBRIUM 62 CHANGING CONDITIONS
equdibrum, both fonwd and backwad rcations_occur at the sane ral
At reman constont.
sO the conentrations ot all the reacticnt and product
a closcd systen
torwards avd bacdewosds eaction mppens at same tnv
dynamic equibbrum
equlibm mxtuce reahed equibbrium whern mao[copit propertes
den1ty. conentroation, coour
dor't daanae with fne eg
BC+ D
A+
-
torwards reaction tast at tirst - lots of A+B
Kevese reatoIA Speed, u as_ concentrations ot (+ D nereace
deccease
Fornarda ceation slows as concentrat1on of At B
ceachod
Le châteliet prniple na tactoc
The posit1on of equlibrunn will shLft to oppose a chaage
taat afets tae eaulibausa mixture
Chanqin concentat1ons
If moe reactant s added, the eauilibeum wd shift cqht, to produe
concentration at reactiants
morr product to oppose tae incease in
Chanqing pressut
there s a ditfeeot
Only afteats reacthons involwing gases, whee
nuvmber ot moles on ea h side ot equation
pressre is nceased, the equlbrun wd shitt to the side iith
If
fener moles, to oppOse tae inrease in pesse
Changung tempecatue
reersubleeactions are exothecnmie n one ducection and endothernc
of enthalpy change is same nin bath dicectians
un the other. Si the endotadoc
wid slitt
Iftenmperatwe IS IMeeased, the equtlsbcium
direction to oppose the ncease in tenpeatue
Catalysts equibrum, hQuever aey alla
b hase no effet on p0sition ot
equiabrLUm to be reached more
which taces to
Lompromise condit1ons ast atten used in dustay
costs, cqupment costs and
alcount yield, reodon rate, building
epratirg custs.
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