Question #7507c
1 Answer
The weak acid to conjugate base ratio for your buffer will be 8.70.
So, you're dealing with a buffer that consists of acetic acid,
Once again, the Henderson-Hasselbalch equation will be your tool of choice.
Start by calculating the
Notice that the pH of the buffer is lower than the
This implies that the ratio you're looking for, weak acid to conjugate base, will be greater than 1.
So, plug your data into the Henderson - Hasselbalch equation
This is equivalent to
So, the ratio conjugate base to weak acid ratio is
This means that the weak acid to conjugate base ratio will be
Rounded to three sig figs, the answer will be
The initial prediction turned out to be correct, you do have more weak acid than conjugate base at that pH.