Odpowiedź:
Wyjaśnienie:
Dane: Szukane:
mrz NaOH =100g Cpsoli=?
Cpz=10%
mrk HCl = 100g
Cpk=10%
msz = Cpz*mrz/100%
msz = 10%*100g/100%
msz = 10g NaOH
msk = Cpk*mrk/100%
msk = 10%*100g/100%
msk = 10g HCl
NaOH + HCl = NaCl + H₂O
40g 36,5g 58,5g
NaOH jest w niedomiarze:
40g NaOH..............58,5g NaCl
10g NaOH..................x
x = 14,625g NaCl
Cp = ms*100%/mr
ms = 14,625g
mr = 200g
Cp = 14,625g*100%/200g
Cp = 7,3%