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a/ c sól = c zas = 0,55 mol/dm3 pKa = 9,25, Vzas/Vsól = 1/10
pH = pKa + log{[czas/csól]*[Vzas/Vsól]} = 9,25 + log 0,1 = 9,25 - 1 = 8,25
b/ pH = 9,25 + log 10 = 9,25 + 1 = 10,25
pozdrowienia
czarnadziura