標題:
ratio of acid
發問:
The pH of a bicarbonate-carbonic acid buffer is 8.50. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
最佳解答:
其他解答:
ratio of acid
發問:
The pH of a bicarbonate-carbonic acid buffer is 8.50. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
最佳解答:
此文章來自奇摩知識+如有不便請留言告知
H2CO3(aq) + H2O(l) = HCO3-(aq) + H3O+ Ka = 4.3 x 10-7 pKa = -log(4.3 x 10-7) = 6.37 pH = pKa - log([H2CO3]/[HCO3-]) log([H2CO3]/[HCO3-]) = pKa - pH = 6.37 - 8.50 = -2.13 Hence, [H2CO3]/[HCO3-] = 10-2.13 = 0.00741其他解答:
文章標籤
全站熱搜
留言列表
