Question

  1. Koliko gramov kalijevega karbonata potrebujes̉ za pripravo raztopine?

Ask by Chavez Pena. in Slovenia
Jan 12,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

Potrebujete približno 259 gramov kalijevega karbonata za pripravo 2,50 L 0,750 M raztopine.

Solution

Za pripravo raztopine kalijevega karbonata ( ) sledite naslednjim korakom:

1. Izračun števila molov:

š
Reformuliramo za :

2. Izračun molarne mase :

  • Kalij (K):
  • Ogljik ©:
  • Kisik (O):

3. Izračun mase :

Rezultat:

Potrebujete približno 259 gramov kalijevega karbonata ( ) za pripravo raztopine.

Answered by UpStudy AI and reviewed by a Professional Tutor

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Bonus Knowledge

Za izračun števila gramov kalijevega karbonata potrebujemo uporabiti formulo: masa = molarna koncentracija (M) × volumen (L) × molarna masa (g/mol). Molarna masa je približno 138,21 g/mol. Tako v našem primeru:
= 260,15 g.
Torej, potrebujete približno 260,15 gramov .
Kako zabavno je delati preproste kemijske izračune! Vsakič, ko pripravljate raztopine, ste kot kemični kuhar, ki spreminja elemente in ustvarja nekaj novega. Uživajte v tej kemijski avanturi!

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