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pOH = 14 - pOH = 14 - 13 = 1
[OH⁻] = 10⁻¹ = 0,1 M
[OH⁻] = Moalritas x Valensi basa
0,1 = M x 1
M = 0,1 Molar
mol = Molaritas x Volume
mol = 0,1 x 2
mol = 0,2 mol
massa = mol x Mr
massa = 0,2 x 56
massa = 11,2 gram
Jadi, massa KOH yang terlarut adalah 11,2 gram