Hoofdstuk 2 : de koolwaterstoffen – hoe dit instuderen?
1. Enkele vragen aangaande de leerstof
1) De koolwaterstoffen kunnen indelen.
Alkanen Cycloalkanen
Alkenen / Alkynen Cycloalkenen
2) De korteketen-alkanen kunnen bespreken, zijnde methaan, ethaan, propaan en butaan met hierbij de
rudimentaire voorstelling, de eventuele skeletformule en het voorkomen van deze stoffen. (ruimtelijke
voorstellingswijze niet kunnen geven!)
Methaan
1 c-atoom – 4 H-atomen / = tetraëder
Rudimentaire voorstelling
Skeletformule?
/
Voorkomen
- Aanwezig in uitstoot van rundvee 🐄
- Gasvormig bij kamerT°
1
, Ethaan
2 c-atomen – 6 H-atomen
Rudimentaire voorstelling
Skeletformule?
/
Voorkomen
- Aanwezig in aardgas 🌍
- Geurloos, kleurloos
- Zeer brandbaar
-----------------------------------------------------------
Propaan
3 c-atomen – 8 H-atomen
Rudimentaire voorstelling
Skeletformule?
Voorkomen
- Aanwezig in propaangas, LPG
- Gebruik bij heteluchtballon, kookvuur
- Gasvormig bij kamerT°
-----------------------------------------------------------
Butaan
4 c-atomen – 10 H-atomen
Rudimentaire voorstelling
Skeletformule?
Voorkomen
- Aanwezig in butaangas, aanstekers
- Gasvormig bij kamerT°
2
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