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Peruslaskut
Kemialliset kaavat pitää kirjoittaa oikein tai koko 
lasku menee metsään 
Kirjoita kemiallinen kaava seuraaville yhdisteille: 
a) kalsiumkloridi 
b) Magnesiumhydroksidi 
c) ammoniumkarbonaatti 
d) rauta(II)sulfaattiheptahydraatti
– Pienimmät mahdolliset kokonaislukukertoimet 
– Hapetus-pelkistysmenetelmä 
• elektronien määrä pitää olla tasan 
(hapettumien=pelksityminen) 
• Sähkövarausten summa on oltava samat molemmilla 
puolilla reaktiota
Muista olomuodot! 
Vety, happi, typpi ja halogeenit 2-atomisena 
Hiilivedyn palamisreaktiossa syntyy hiilidioksidia ja 
vettä
Esitä tasapainotettu reaktioyhtälö reaktiolle, 
joka tapahtuu, kun 
a) natriumvetykarbonaatti reagoi suolahapon 
kanssa 
b) metallinen kalsium laitetaan veteen 
c) 1-buteeni palaa täydellisesti 
d) magnesiumlastuja laitetaan suolahappoon
Fe2+ (aq) + NO3 
- (aq) + H+ (aq) → Fe3+ (aq) + NO(aq) + H2O 
(l)
Yksiköt! 
Välituloksissa 2 desimaalia enemmän kuin 
epätarkimmassa lähtöaineessa
Yleensä vastaukset annetaan massoina, kaasuilla 
tilavuutena 
NTP-olosuhteet ( 1,013 bar, 0 oC) 
Rajoittava tekijä pitää perustella!! 
Reaktiosarjassa välituotteet supistetaan pois ja 
kirjoitetaan kokonaisreaktio
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Laskut

  • 2. Kemialliset kaavat pitää kirjoittaa oikein tai koko lasku menee metsään Kirjoita kemiallinen kaava seuraaville yhdisteille: a) kalsiumkloridi b) Magnesiumhydroksidi c) ammoniumkarbonaatti d) rauta(II)sulfaattiheptahydraatti
  • 3. – Pienimmät mahdolliset kokonaislukukertoimet – Hapetus-pelkistysmenetelmä • elektronien määrä pitää olla tasan (hapettumien=pelksityminen) • Sähkövarausten summa on oltava samat molemmilla puolilla reaktiota
  • 4. Muista olomuodot! Vety, happi, typpi ja halogeenit 2-atomisena Hiilivedyn palamisreaktiossa syntyy hiilidioksidia ja vettä
  • 5.
  • 6. Esitä tasapainotettu reaktioyhtälö reaktiolle, joka tapahtuu, kun a) natriumvetykarbonaatti reagoi suolahapon kanssa b) metallinen kalsium laitetaan veteen c) 1-buteeni palaa täydellisesti d) magnesiumlastuja laitetaan suolahappoon
  • 7. Fe2+ (aq) + NO3 - (aq) + H+ (aq) → Fe3+ (aq) + NO(aq) + H2O (l)
  • 8. Yksiköt! Välituloksissa 2 desimaalia enemmän kuin epätarkimmassa lähtöaineessa
  • 9. Yleensä vastaukset annetaan massoina, kaasuilla tilavuutena NTP-olosuhteet ( 1,013 bar, 0 oC) Rajoittava tekijä pitää perustella!! Reaktiosarjassa välituotteet supistetaan pois ja kirjoitetaan kokonaisreaktio