Question

Do 200g 5% roztworu KCl dosypano 100g tej samej substanji. Oblicz Cp roztworu.

Answer 1

200*5%+100g*100%=300g*x%

1000+10 000=300x

x=36⅔[%]

Answer 2

ms=mr/100%*Cp

ms=200/100%*5%=10g

msk=10g+100g=110g

mr=ms+mr=110+190=300g

Cp=ms/mr*100%

Cp=110/300*100%=36,67%