120 mL = 120 g apa
md = 80g
stim ca ms = md+m.apa = 120+80 = 200 g sol
stim ca c% = mdx100/ms
= 80x100/200 = 40%
Cm = roxc%x10/miu, miu.NaOH = 40 g/mol
= 1,4726x40x10/40 = 14,73 M
