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Ta r e Marche / Arrêt
200.0 g
Ta r e Marche / A r rêt
200.0 g
Avant la dissolution Après la dissolution
Coupelle
avec du sel
Bécher
avec de
l’eau
Cuillère
Balance
Vu au collège : Dissolution
La masse ne varie pas lors d’une dissolution
Eau V1Sucre V2eau sucrée V3
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CV
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m g Masse de sulfate de cuivre
VmLLVolumedelasolution
CV
mg L Concentration massique
6
200 0 2
02
630
m1
y
y
y
=
==
== = -
mC VouV C
m
mm
#==
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27 26 23
## # #-==
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n mol Nombre de moles de chlorure de sodium
V mL L Volume d eau
cV
nmol L Concentration molaire de la solution
3
500 0 5
05
361
y
y
y
=
==
== = -