稀硫酸溶液 為何會有 氫氧離子 ?

因為有條咁o既式: Kw = [H+][OH-] (at room temp ionic product of water Kw = 1.00 x 10-14 mol2 dm-6)
無論幾濃o既酸, 只要有一點水, 都會有氫氧離子
當氫離子濃度提升, 氫氧離子濃度就會下降, 不過唔會降到零

water in the acid will ionize to form ions such as H+ & OH-
so , OH- will appear in dilute H2SO4