5 Steps to a 5 AP Chemistry 2019

398 ❯ Exam Resources

Kw = [OH-][H+] = 1.0 × 10 -^14 = Ka × Kb at 25°C

pH = - log [H+], pOH = - log [OH-]

14 = pH + pOH

=+

−

pH plK og

[A ]

a [HA]

=+

+

pOHpK log

[HB]

b [B]

pKa = - log Ka, pKb = - log Kb

Kp = Kc(RT)Dn, where Dn = moles product gas - moles reactant gas

Experimental

Beer’s Law: A = abc (A = absorbance; a = molar absorbtivity; b = path length;

c = concentration)

22-Moore_APP_p371-412.indd 398 31/05/18 2:00 pm