which-of-the-following-correctly-defines-the-henderson-hasselbalch-equation

Question

Which of the following correctly defines the Henderson Hasselbalch equation?

Accepted Answer

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

Answer

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

Answer

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

Answer

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