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Samenvatting Chemie Course 3 $6.41   Add to cart

Summary

Samenvatting Chemie Course 3

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Dit is de samenvatting voor chemie course 3 leerjaar 1.

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  • February 7, 2023
  • 22
  • 2022/2023
  • Summary
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Chemie
Chemisch evenwicht= dynamisch evenwicht

 Dynamisch evenwicht:
1. De heengaande en teruggaande reactie vinden beiden plaats
2. De reactiesnelheid van beide reacties is gelijk




Evenwichtsconstante K en evenwichtsvoorwaarde
De concentraties van de stoffen veranderen niet meer (relatief)




Evenwichtsvoorwaarde opstellen algemeen




Kc heeft geen eenheid !
*Alleen stoffen in gasfase (g) of opgelost (aq) komen in de evenwichtsvoorwaarde voor.

,De belangrijkheid van K
Zijn er meer reactanten of producten?




Relatie tussen K en de evenwichtsvergelijking
wanneer je de reactie omdraait, wordt de evenwichtsconstantie ‘omgekeerd’.




Sterke en zwakke zuren
 Sterk zuur:




 Zwak zuur:




Zwakke zuren: de zuurconstante Ka
Ka= zuurconstante (a van acid), mate voor sterkte van het zuur
*voorbeeld methaanzuur;
HCOOH + H2O  HCOO- + H3O+

Sterke en zwakke basen
 Sterke base:


 Zwakke base:

, Zwakke basen: de baseconstante Kb
Kb= baseconstante, mate voor sterkte van de base
*voorbeeld ammoniak;
NH3 + H2O  NH4+ + OH-




Auto-ionizatie van water
Water kan zowel als zuur, als base reageren!

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