mencari ph CaOH 0.001M

Mapel: Kimia
Kelas: XI
Materi: Asam Basa

Jawab

Ca(OH)2 → Ca²+ + 2OH-
merupakan basa kuat
Valensi basa = 2

[OH-] = Vb × M
[OH-] = 2 × 0.001
[OH-] = 0.002
[OH-] = 2×10-³

pOH= -log[OH-]
pOH =-log 2×10-³
pOH= 3-log2

pH= 14-pH
pH= 14-(3-log2)
pH = 11+log2
pH = 11+0.3
pH= 11,3