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Summary Gr 11 Kwantitatiewe aspekte van chemiese verandering

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Gr 11 Kwantitatiewe aspekte van chemiese verandering Formules Persentasiesamestelling Empiriese Formule Stoigometriese Berekeninge Persentasieopbrengs

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  • June 19, 2023
  • 6
  • 2022/2023
  • Summary

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  • kwantitatiewe aspekte van chemiese verandering

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KWANTITATIEWE ASPEKTE
VAN CHEMIESE VERANDERING

,Kwantitatiewe aspekte van chemiese verandering

Definieer een mol: Die stofhoeveelheid wat dieselfde getal deeltjies het as wat daar
atome in 12 g koolstof-12 is.

Beskryf Avogadro se getal, NA,: Die getal deeltjies (atome, molekule, formule-eenhede)
teenwoordig in een mol (NA = 6,023 x 1023 mol-1).

Molêre massa: Die massa van een mol van 'n stof gemeet in g·mol-1.
Avogadro se wet: Een mol van enige gas beslaan dieselfde volume by dieselfde
temperatuur en druk.

Standaard temp. en druk: 0⁰ C en 101,3 KPa




Bladsy 1 van 5 © Copyright reserved/Kopiereg voorbehou At Hattingh ©

, Formules:
Massa van stof (gram)

m m
n= Molêre Massa van stof ( g.mol-1 )

M n M
Aantal mol ( mol )


Aantal deeltjies ( Atome , Formule Eenhede of Molekules )

N
n= Avogardo se getal ( 6,02 x 1023)
N
NA
Aantal mol (mol) n Na


Volume in dm3

V
n= Molêre Gasvolume konstante 22,4 V
Vm
Aantal mol (mol)
n Vm



n Aantal mol (mol)


c= n
V Volume in dm3


c V
konsentrasie van die stof in mol.dm-3




Bladsy 2 van 5 © Copyright reserved/Kopiereg voorbehou At Hattingh ©

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