Do 75g 23% roztworu soli dodano 5g tej samej soli.Oblicz Cp otrzymanego roztworu.
Oraz
Oblicz Cp nasyconego roztworu,jeżeli rozpuszczalność wynosi 40 g
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Zad.1
mr1=75g
Cp1=23%
mr2=80g ( bo 75g + 5g)
ms1=75*23%=17,25g
ms2=17,25+5=22,25g
Cp2=(22,25/80)*100%≈27,8%
Zad.2
40g-100g H₂O
ms=40g
mr=140g
Cp=(40/140)*100%≈28,6%