October 2018 1 55 Report
61. Hitung konsentrasi ion H+ dan OH- dalam air jika pada suhu tertentu diketahui nilai Kw = 1 × 10-12.

62. Hitung konsentrasi ion H+ yang terdapat di dalam 100 mL larutan CH3COOH 0,4 M (Ka = 1 × 10-5).

63. Larutan NH4OH 0,2 M mempunyai nilai pH = 11 + log 2. Hitunglah nilai Kb NH4OH tersebut.

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