Do 100g roztworu kwasu solnego o stężeniu 10% dodano 50g wody. oblicz stężenie kwasu po rozcięczeniu.
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mr1=100g
Cp1=10%
mr2=100g+50g=150g
Szukane:
ms=?
Cp2=?
ms=Cp1*mr1/100%
Cp2=ms*100%/mr2
Obliczenia:
ms=10%*100g/100%
ms=10g
Cp2=10g*100%/150g
Cp2=6,67%