2. Oblicz Cp roztworu jeżeli z 400g 10% roztworu pdparowano 100g wody?
mr=400g
Cp=10%
ms=?
mw=?
Cp=ms/mr*100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%
ms=10%*400g/100%=40g
ms=40g
mr=ms+mw
400g=40g+mw
400g-40g=mw
360g=mw <-tyle było wody przed odparowaniem 100g
Nowy roztwór
mw=360g-100g=260g
mr=40g+260g=300g
Cp=ms/mr*100%
Cp=40g/300g*100%≈13,3%
Cp≈13,3%
ms = 10%*400g
ms = 0,1*400g
ms = 40g
mr= 400g-100g
mr = 300g
Cp = 40g/300g *100%
Cp ≈ 13,33%
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mr=400g
Cp=10%
ms=?
mw=?
Cp=ms/mr*100% /*mr
Cp*mr=ms*100% /:100%
ms=Cp*mr/100%
ms=10%*400g/100%=40g
ms=40g
mr=ms+mw
400g=40g+mw
400g-40g=mw
360g=mw <-tyle było wody przed odparowaniem 100g
Nowy roztwór
mw=360g-100g=260g
ms=40g
mr=40g+260g=300g
Cp=ms/mr*100%
Cp=40g/300g*100%≈13,3%
Cp≈13,3%
ms = 10%*400g
ms = 0,1*400g
ms = 40g
mr= 400g-100g
mr = 300g
Cp = 40g/300g *100%
Cp ≈ 13,33%