1.ze 170g 20 % roztworu chlorku wapnia odparowano 20g tej wody. Oblicz Cp tego roztworu 2.do 180 g 12 % roztworu chlorku wapnia dosypano 20g soli. Oblicz Cp tego roztworu
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1.ze 170g 20 % roztworu chlorku wapnia odparowano 20g tej wody. Oblicz Cp tego roztworu 2.do 180 g 12 % roztworu chlorku wapnia dosypano 20g soli. Oblicz Cp tego roztworu
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Ad.1
Cp1 = 20%
mr = 170g
ms =?
ms = mr*Cp/100%
ms = 20%*170g/100%
ms = 34g
mr2 = 170g - 20g = 150g
Cp2 = 34g/150g *100%
Cp2 = 22,67%
Ad.2
Cp1= 12%
mr1= 180g
ms1= ?
ms1 = 12%*180g/100%
ms1 = 21,6g
ms2 = 21,6g + 20g = 41,6g
mr2 = 180g + 20g = 200g
Cp2 = 41,6g/200g *100%
Cp2 = 20,8%