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Mr= 300g Ms=(20%*300g)/100%
Cp=20% Ms =60g
Ms=60g
Mr2= 200g
Ms2=60g
Cp2=(60g/200g)*100%
Cp2= 30%
Stężenie roztworu po odparowaniu 100g rozpuszczalnika będzie wynosiło 30%.
mr2 - 300g - 100g = 200g
Cp1 - 20%
ms - ?
Cp2 - ? - szukane
ms = (Cp1 * mr1)/100% = (20% * 300g )/100% = 60 g
Cp2 = (ms/mr2) * 100% = 60g/200g * 100 % = 30 %
Odp: Stężenie procentowe tego roztworu będzie wynosić 30 %.