Ionic EquilibriumHard
Question
What is the minimum pH when Fe(OH)3 starts precipitating from a solution containing 0.1M FeCl3? Ksp of Fe(OH)3 = 8 × 10-13 M3
Options
A.3.7
B.5.7
C.10.3
D.8.3
Solution
[Fe3+] [OH-]3 ≥ Ksp
[OH-] ≥ 3.7 ⇒ pOH ≤ 3.7 ⇒ pH ≥ 10.3.
[OH-] ≥ 3.7 ⇒ pOH ≤ 3.7 ⇒ pH ≥ 10.3.
Create a free account to view solution
View Solution FreeMore Ionic Equilibrium Questions
The base imidazole has a Kb of 1.0 × 10–7 at 25°C. In what volumes should 0.02 M-HCl and 0.02 M imidazole be mixed to ma...The pH at the equivalence point when a solution of 0.01 M-CH3COOH is titrated with a solution of 0.01 M-NaOH, is (pKa of...HCN is weak acid (Ka = 4.0 × 10-4). Which statements is not true for an aqueous solution of hydrocyanic acid ?...What is the aqueous ammonia concentration of a solution prepared by dissolving 0.15 mole of NH4+CH3COO− in 1 L of water?...For reaction, 2NOCl(g) ⇋ 2NO(g) + Cl2(g) ; Kc at 427oC is 3 × 10-6 L mol-1. The value of Kp is nearly:...