rozpuszczono 10g węglanu magnezu w 40g wody. oblicz syeżenie procętowe rztworu.
Dane:
ms=10g
mw=40g
Szukane:
Cp=?
Rozwiązanie:
Cp=(ms*100%)/mr
mr=ms+mw
mr=10g+40g=50g
Cp=(10g*100%)/50g=20%
Cp=20%
ms (masa soli) = 10g
mw (masa wody) = 40g
mr (masa roztworu) = ms + mw = 10g + 40g = 50g
C% (stężenie procentowe) = ?
C% = ms * 100% :mr = 10g * 100% : 50g = 20%
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Dane:
ms=10g
mw=40g
Szukane:
Cp=?
Rozwiązanie:
Cp=(ms*100%)/mr
mr=ms+mw
mr=10g+40g=50g
Cp=(10g*100%)/50g=20%
Cp=20%
ms (masa soli) = 10g
mw (masa wody) = 40g
mr (masa roztworu) = ms + mw = 10g + 40g = 50g
C% (stężenie procentowe) = ?
C% = ms * 100% :mr = 10g * 100% : 50g = 20%