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Summary AQA A level chemistry Kp revision notes
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A helpful and comprehensive set of revision notes covering the Kp unit of AQA A level chemistry
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Equlibruun19.1
Constand
Kp FOR HOMOGENEOUS
sysTEMS
kp
Gaseous equbbNS also oey the equilbrum law but they ave expressed
using patial pressue. ln a qaseous mixture, cach aas ontibutes to
tota pressue. lhe patial pressue ot a q as is the presswe tha the
9as wCuld exet it t olcupied the contaner on its own,.
Patia pressure lp) : mole fraction xtotal pressue
Mole Haction: moles ot qas A in mixture
total moles of gaS.
Equilibum Law
Kp i
pA qy)pBia)
N¡Oucq) ZN0,
Kp
when doing calulations_remember the sum ot the mole troctions wil
odd to l. f there 's not eaough infornnatian, caa use algeha.
Chanq1ng Conditions
Kp does not vary with pressure oracatalyst
Kp niy vanes wsth changesin termpeatuce
Ls To work out it Kp_inceased or deeases locok at the change
made to the tenmperature aod the type ot ceaction n the
forwavds drectiOn lexothemc or endothernmc)
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