If Iron(III) Acetate Is Added to Be 1 × 10^-10

question 46

Multiple Choice

If iron(III) acetate is added to be 1 × 10^-10 M in a solution that is 0.10 M NH₃, what is Qsp and will Fe(OH) ₃ precipitate? The Ksp of Fe(OH) ₃ is 4 × 10^-38 and Kb for NH₃ is 1.8 × 10^-5.

• A) 1.3 × 10^-13, yes
• B) 1.7 × 10^-16, yes
• C) 1.7 × 10^-16, no
• D) 2.4 × 10^-19, yes
• E) 2.4 × 10^-19, no