The video tutorial explains the Henderson-Hasselbalch equation, focusing on calculating pH in a buffer system. It discusses the relationship between pKa and pH, especially when the concentrations of conjugate acid and base differ. The tutorial uses lactic acid as an example, illustrating the titration curve and how pH changes with the addition of sodium hydroxide. The video concludes with a calculation showing the pH is higher than the pKa due to the higher concentration of the conjugate base.

What is the Henderson-Hasselbalch equation used for?

Explain what happens to pH when the concentrations of conjugate acid and base are not equal.

What is the significance of the pKa value in relation to pH?

What are the concentrations of the conjugate base and conjugate acid in the example problem?

Describe the titration curve for lactic acid as discussed in the video.

How do you calculate the pH using the Henderson-Hasselbalch equation?

What is the final calculated pH when the concentrations of the conjugate base and acid are given?