Mama do 200g roztworu słonej wody o stezeniu 25% dosypała 10g soli oblicz Cp roztworu uzyskanego w tan sposób.
Cp=ms : mr * 100%
ms=Cp * mr : 100%
ms1=25% * 200g : 100%= 50g
ms2=50g + 10g=60g
mr2=200g + 10g =210g
Cp2= 60g : 210g * 100% = 28,6%
daj najj
Dane : Szukane:
mr1 = 200 g Cp2 = ?
Cp1 = 25 % ms1 = ?
+ms = 10 g ms2 = ?
mr2 = ?
1. Obliczamy mr2 :
mr2 = mr1 + ms
mr2 = 200g + 10 g = 210g
2.Obliczamy ms1
25 - 100
ms1 - 200
ms1 = 25*200
100
ms1 = 50g
3.Obliczamy ms2
ms2 = ms1 + ms
ms2 = 50g + 10g = 60g
4.Obliczamy Cp2
Cp = ms2 Cp2 = 60
mr2 210 *100 %
Cp = ok.29 %
:)
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Cp=ms : mr * 100%
ms=Cp * mr : 100%
ms1=25% * 200g : 100%= 50g
ms2=50g + 10g=60g
mr2=200g + 10g =210g
Cp2= 60g : 210g * 100% = 28,6%
daj najj
Dane : Szukane:
mr1 = 200 g Cp2 = ?
Cp1 = 25 % ms1 = ?
+ms = 10 g ms2 = ?
mr2 = ?
1. Obliczamy mr2 :
mr2 = mr1 + ms
mr2 = 200g + 10 g = 210g
2.Obliczamy ms1
25 - 100
ms1 - 200
ms1 = 25*200
100
ms1 = 50g
3.Obliczamy ms2
ms2 = ms1 + ms
ms2 = 50g + 10g = 60g
4.Obliczamy Cp2
Cp = ms2 Cp2 = 60
mr2 210 *100 %
Cp = ok.29 %
:)