The pKa of acid is 5.The pH of a solution containing acid X and its conjugate base is 6.What is the ratio of the concentration of conjugate base to the concentration of acid?(conjugate base:acid)(A)1:1(B)2:1(C)5:1(D)10:1(E)20:1
问题描述：
The pKa of acid is 5.The pH of a solution containing acid X and its conjugate base is 6.What is the ratio of the concentration of conjugate base to the concentration of acid?(conjugate base:acid)
(A)1:1
(B)2:1
(C)5:1
(D)10:1
(E)20:1
答
pH =pKa + log(base/acid)
5 = 6 + log(base/acid)
。。。
答
Ka（酸的平衡常数）pKa就是该酸的平衡常数的负对数值,类似于pH,pKa可以称为酸度.
酸度值为5.包含这个酸和它的共轭碱的溶液的pH是6.那共轭碱的浓度和酸的浓度的比值是多少?（共轭碱：酸）