The pKa of acid is 5.The pH of a solution containing acid X and its conjugate base is 6.What is the

The pKa of acid is 5.The pH of a solution containing acid X and its conjugate base is 6.What is the

题目
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
答案
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)
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