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A pH of 4.65 means it has a pOH of: 14 - 4.65 = 9.35 pOH = -log[OH-] [OH-] = 10^(-9.35) [OH-] = 4.47 x 10⁻¹⁰ mol/dm³
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A pH of 4.65 means it has a pOH of: 14 - 4.65 = 9.35 pOH = -log[OH-] [OH-] = 10^(-9.35) [OH-] = 4.47 x 10⁻¹⁰ mol/dm³