" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
*n Ca(OH)2 = 7,4 gram/74 = 0,1 mol
*M Ca(OH)2 = 0,1 mol /0,25 L = 0,4 Molar
Ca(OH)2 termasuk basa kuat, maka [OH-] ditentukan oleh Molaritas dan valensi basa:
[OH-] = M x valensi basa
= 0,4 x 2
= 0,8 atau 8 x 10^-1
pOH = 1 - log 8
pH = 14 - pOH
= 13 + log 8
(7,4/ 74) x (1000/ 250)
0,1 x 4
0,4 mol
[OH-] = b x Mol = 2 x 0,4 = 0,8 mol
POH = - log 8x10^-1 = 1-log 8
PH = 14-POH = 14-(1-log 8)= 13+log 8