Oblicz stężenie procentowe roztworu otrzymanego po rozpuszczeniu 5 kg soli kuchennej w 25 dm3 wody.
Cp=? ms=5kg Vw=25dm3
dw=1g/cm3=1kg/dm3
mw=d*V
mw=1kg/dm3*25dm3
mw=25kg
mr=ms+mw
mr=5kg+25kg
mr=30kg
Cp=ms*100%/mr
Cp=5kg*100%/30kg
Cp=16,7%
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Cp=? ms=5kg Vw=25dm3
dw=1g/cm3=1kg/dm3
mw=d*V
mw=1kg/dm3*25dm3
mw=25kg
mr=ms+mw
mr=5kg+25kg
mr=30kg
Cp=ms*100%/mr
Cp=5kg*100%/30kg
Cp=16,7%