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Valensi = 2
Molaritas Ca(OH)2+ 2OH- =
= g
= (7,4 / 74) x (1000 / 250)
= 0,4 M
[OH-] = Valensi basa kuat x Molaritas
= 2 x 0,4
= 0,8
pOH = -log [OH-]
= -log (0,8)
= 0,096910013
pH = 14 - pOH
= 14 - 0,096010013
= 13,90308999