MCAT General Chemistry Review - Alexander Stone Macnow, MD 2019-2020

Acids and Bases
Equations to Remember

(10.1) Autoionization constant for water: K_w = [H₃O⁺][OH⁻] = 10⁻¹⁴ at 25°C (298 K)

(10.2) Definitions of pH and pOH:

(10.3) Relationship of pH and pOH at 298 K: pH + pOH = 14

(10.4) p scale value approximation: p value ≈ m − 0.n

(10.5) Acid dissociation constant:

(10.6) Base dissociation constant:

(10.7) Relationship of Ka and Kb at 298 K:

(10.8) Equivalence point: N_aV_a = N_bV_b

(10.9) Henderson—Hasselbalch equation (acid buffer):

(10.10) Henderson—Hasselbalch equation (base buffer):