Question 1
What is the Henderson-Hasselbalch equation used for in acid-base chemistry?
Question 2
In the equation $pH = pK_a + \log\left(\frac{[A^-]}{[HA]}\right)$, what does $pK_a$ represent?
Question 3
A buffer has equal concentrations of a weak acid and its conjugate base. What is true about the $pH$ of the buffer?
Question 4
Which pair can form a buffer solution?
Question 5
What happens to the $pH$ of a buffer when a small amount of acid is added?
