Buffer & pH Blitz

60-second numerical sprint on pH, pOH, Ka/Kb & the Henderson equation.
+4 correct · −1 wrong · NEET scoring.

pH = −log[H⁺] · pH + pOH = 14
pKa + pKb = 14 (at 298 K)
Henderson: pH = pKa + log([salt]/[acid])
Ksp (AB salt): S = √Ksp