Do 200g roztworu 15% kwasu solnego dosypano 20g kwasu. Oblicz stężenie procentowe.
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mr1=200g
Cp1=15%
mr2=200g+20g=220g
Szukane:
ms1=?
ms2=?
Cp2=?
Obliczenia:
ms1=Cp1*mr1/100%
ms1=15%*200g/100%
ms1=30g
ms2=30g+20g=50g
Cp2=ms2*100%/mr2
Cp2=50g*100%/220g
Cp2=22,73%