Finding the pKa of a weak acid.

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

A buffer is prepared by adding 1.50x10(exponent 2)mL of 0.250M NaOH to 2.50x10(exponent 2)mL of 0.350M weak acid, HB. The solution is diluted to 1.00L. If the pH of the resulting solution is 5.55, what is the pKa of the weak acid?

© BrainMass Inc. brainmass.com February 24, 2021, 2:11 pm ad1c9bdddf
https://brainmass.com/chemistry/acids-and-bases/finding-the-pka-of-a-weak-acid-6414

Solution Preview

From Henderson-Hasselbalch equation

pH = pKa + log ([conjugate base]/[acid])

Here pH = ...

Solution Summary

Solution uses Henderson-Hasselbalch to solve problem, including steps.

$2.19