phys.py

Created by aksil69140

Created on December 08, 2022

747 Bytes


disolution d un solute solide 
dans un solvant 
1 peser masse de solute a dissoudre 
2 verser fiole 
3 ajt eau jusquaux 2/3 du volume on agite 
4 on cmplete jusquau trait de jauge 
 calculer masse  fonction volume 
 t msolute/vsolution
 msolute txvsolution
 dilution
 dilution donner solution moins cncentre
solution depart mere  
solution final fille 
1 preleve solution mere pipette
2 verse fiole 
3 ajt eau on agite 
trait de jauge 
quantite solute mere est la meme quantite solution final fille
m mere = m fille
t= mxv
tmere x v preleve =tfille v final
facteur dilution f tmere/tfille = vfille/ v mere
cm 15.0 gl -1
cm x vo cm x v



cm1= cm0xv0/v1
cm1 15.0x20/50
determiner cncentration en masse 
l v1/v0l  g/l-1 cm0/cm1 g/l-1 =2

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