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Chemie 2 - Oefenexamen (zelf gemaakt) $2.68
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Chemie 2 - Oefenexamen (zelf gemaakt)

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  • Course
  • Chemie 2
  • Institution
  • Odisee Hogeschool (Odisee)

Dit document bevat oefeningen uit alle hoofdstukken. Zo kan je de oefeningen zelf proberen zoals het zal zijn op een echt examen. Op het einde van het document staan de antwoorden of de plaats waar het antwoord te vinden is in de cursus/ powerpoints...

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Document information

  • July 16, 2023
  • 19
  • 2021/2022
  • Other
  • Unknown

Subjects

  • chemie

Written for

  • Odisee Hogeschool (Odisee)
  • Voedings- En Dieetkunde
  • Chemie 2
All documents for this subject (5)

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Student2302

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Proefje Chemie
HFDST 1 : oef 1-3

HFDST 2 : oef 4-5

HFDST 3 : oef 6, 8-10 (7 zijn definities overkoepelend)

HFDST 4 : oef 11-14 + oef 21 bcs Zita

HFDST 5 : oef 15-20




1

,1. Maak zelf je (isotone) sportdrank. Een isotone drank heeft ongeveer dezelfde dichtheid als
lichaamsvocht. Meng 30 gram kristalsuiker (C12H22O11) met 0,5 gram zout . Los op in warm water
en leng verder aan met water tot 500 ml.
Bereken de concentratie van suiker in

a) molariteit
b) molaliteit

Molmassa: C12H22O11 :342,3 g/mol dichtheid oplossing 1,022 g/ml




2. Welke is de molfractie van de opgeloste stof in een waterige oplossing als de oplossing een
concentratie heeft van 1 mol/l ? Het volume blijft 1l.




2

, 3. Welke volumes 12 mol/l en 3 mol/l HCl (36,5g/mol) moeten gemengd worden om 1 liter 6 mol/l
HCl te bekomen?




4. Hoeveel gram erts dat 60 m/m% MnO2 bevat is er nodig om te reageren met 50 ml 37m/m% HCl
oplossing met dichtheid 1,18 g/ml?

MnO2 + 4 HCl → MnCl2 + Cl2 + 2 H2O
M MnO2 = 87,0 g/mol M HCl = 36,5 g/mol




3

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