Question

A buffer solution is made using weak acid, HA, with a pKa of 6.98. If the ratio of [A-] to [HA] is 1.0 x 10^3, what is the pH of the buffer

Answer 1

yes the answer above is correct

Answer 2

The Henderson-Hasselbalch equation can be used to calculate the pH of a buffer solution. The equation is:

pH = pKa + log([A-]/[HA])

In this case, the pKa of HA is 6.98, and the ratio of [A-] to [HA] is 1.0 x 10^3. Plugging in these values, we get:

pH = 6.98 + log(1.0 x 10^3)

pH = 9.98

Therefore, the pH of the buffer solution is 9.98.