Zinc is an amphoteric metal, meaning it reacts with both acids and bases. The standard reduction potential is -1.36 V for the following reaction:
(1) Zn(OH)4^2-(aq) + 2e^- → Zn(s) + 4OH^-(aq) Calculate the formation constant Kf for the reaction:
(2) Zn^2+(aq) + 4OH^-(aq) ⇌ Zn(OH)4^2-(aq)
Kf = ?? x 10^20 (answer in scientific notation)
(wrong answers I have tried: 2.2188 and 2.188 and 0.51 and 2. but the exponent is 20)