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HQ>HS>HT>HP>HR
Jawaban : E (HR<HT<HQ)
4. Gambar garis bilangan dan didapat jawaban E (4,4 ≤ pH ≤ 10,0 dan 4,4 ≤ pH ≤ 6,0)
5. M = mol/V = 0,05/1 = 0,05 M
OH⁻ = M x a = 0,05 x 2% = 10⁻³
pOH = - log OH⁻ = 3
pH = 14 - pOH = 14 - 3 = 11 (D)
6. H⁺ = √Ka x M = √9 x 10⁻⁸ x 0,01 = 3 x 10⁻⁵
pH = - log H⁺ = 5 - log 3 (B)