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Det du måste göra är att lösa hur mycket volym av den koncentrerade lösningen man ska ta.
Alltså V1
Tänk på följande:
C1 x V1 motsvarar den koncentrerade lösningen
C2 x V2 motsvarar den utspäda lösningen
Så om du använder igen:
C1 x V1 = C2 x V2
Du har C1, men du vet inte hur mycket av V1 du ska ta och därför du ska lösa ur den.
Du vet att C2 ska vara 0.050 mol/L och du vet att det ska vara V2 på 15 ml
Räkna om
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