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Practicum Molaire massa
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Volledige verslagen voor algemene chemie praktijk (L. Baeten), Practica zijn per 2, wat dus maakt dat jullie voor €12 safe zitten
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By: salwasaid • 4 year ago
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Naam: Laura Lens en Ophélie De Mol Plaatsnummer: 49 + 50 Datum: 6 oktober 20171 BEPALING VAN DE MOLAIRE MASSA VAN ZUURSTOF
OPMERKING: - Lees de vragen aandachtig!
- Overschrijd de opgegeven ruimte niet!
- Berekeningen worden als bijlage toegevoegd!
DOEL:
Fysische eigenschappen zoals druk, volume en temperatuur leren meten en de molaire massa van zuurstof
zelf bepalen met behulp van een proef.
REACTIEVERGELIJKING:
2 KCl O3 ( l )−onder invloed van−¿ Δ T −en Mn O2 als katalysator−→ KCl ( l ) +3 O 2 ( g )
RESULTATEN:
24,30 g
Massa proefbuisje + inhoud vóór de proef (g):
22,90 g
Massa proefbuisje + inhoud na de proef (g):
24,30 g – 22,90 g = 1,40 g
Massa der vrijgekomen zuurstof (g):
1133 mL ≈ 1,133 L
Volume opgevangen gas (mL en L):
20°C = 293 K
Temperatuur van het gas (°C en K):
18°C = 291 K
Temperatuur van het water (°C en K):
Dampdruk van water bij deze temperatuur, 15,5 mm Hg ≈ 0,0204 atm
(mm Hg en atm):
753 mm Hg ≈ 0,991 atm
Barometerdruk (mm Hg en atm):
14,7 g/mol
Molaire massa zuurstof (g/mol):
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