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The relationship between Ka and Kb, and pKa and pKb. Examples of finding Ka of a weak acid given Kb of the conjugate base.
So the first thing we need to do, if we're gonna calculate the pH of our buffer solution, is to find the pKa, all right, and our acid is NH four plus. So let's say we already know the Ka value for NH four plus and that's 5.6 times 10 to the negative 10. To find the pKa, all we have to do is take the negative log of that.
Because the ionization is not complete, the concentration of OH⁻ in a weak base solution is typically much less than the initial base concentration. The relative strength of a weak base is described by the base ionization constant, Kb, which is the equilibrium constant for the reaction of the weak base with water.
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Quick overview of Ka and pKa. Example of calculating the pH of a weak acid solution.
弱酸的 Ka 与其共轭碱的 Kb 之间的关系。用于在 Ka 和 Kb 之间转换的公式, 以及在 pKa 和 pKa 之间转换的公式。
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