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Stories Tagged ‘pH asam lemah’

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Menghitung pH Larutan Asam

1. Berapakah pH larutan yang mengandung ion hidroksida sebesar 10exp-8? Jawab: Perlu diingat bahwa untuk menyelesaikan soal diatas maka kita perlu memakai hubungan antara Kw (konstanta tetapan air) dengan OH- dan H+, dimana ketiganya dihubungkan dengan persamaan: Kw = [H+][OH-] Pada suhu 25 C maka nilai Kw adalah 10exp-14 jadi: Konsentrasi H+ = Kw/[OH-] = 10exp-14/10-8 = 1... More »

 
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