一道有关pka和ph的英语化学题A weak acid is titrated with a strong base and during the titration the pH is plotted.On studying the titration "pH vs volume added" curve it is found that one third of the way to the equivalence point the pH was 5.55.What is the value of pKa for the weak acid?是不是用 pH = pKa + log10([A-]/[HA]) 这个公式呢?简单翻译如下:用强碱滴定弱酸,当滴定到达完全反应（酸碱正好反应完）的三分之一时,此时的ph=5.55,那么这个弱酸的pka是多少?
问题描述：
一道有关pka和ph的英语化学题
A weak acid is titrated with a strong base and during the titration the pH is plotted.On studying the titration "pH vs volume added" curve it is found that one third of the way to the equivalence point the pH was 5.55.What is the value of pKa for the weak acid?是不是用 pH = pKa + log10([A-]/[HA]) 这个公式呢?
简单翻译如下:用强碱滴定弱酸,当滴定到达完全反应（酸碱正好反应完）的三分之一时,此时的ph=5.55,那么这个弱酸的pka是多少?
答