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M KOH = M1 = 0,1 M
V KOH +V air = 100ml
[OH⁻]1 = M1 x n basa
= 0,1 x 1
= 0,1
pOH 1 = -log[OH⁻]
= -log [10^-1]
= 1
pH 1 = 14 - pOH
= 14 - 1 = 13
V1 x M1 = V2 x M2
1 x 0,1 = 100 x M2
0,1 = 100 M2
M2 = 0,1 / 100 = 10^-3
[OH] 2 = M2 xn basa
= 10^-3 x1
= 10^-3
pOH 2 = -log [OH]
= -log[10^-3]
= 3
pH 2 = 14 - pOH2
= 14 - 3
= 11