Do 50 g 2-procentowego roztworu zasady sodowej dolano 50 g wody . oblicz stężenie procentowe rozcieńczonego roztworu.
poprosze na zrobienie na za teraz :D
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mr1=50g Cp1=2% mw dod=50g Cp2=?
ms=mr1*Cp1/100%
ms=50g*2%/100%
ms=1g
mr2=mr1+mw dod
mr2=50g+50g
mr2=100g
Cp2=ms*100%/mr2
Cp2=1g*100%/100g
Cp2=1%