Question

Which compound will precipitate when solutions of iron(II) acetate, Fe(C2H3O2)2, and potassium iodide (KI) are mixed?

Answer 1

FeI2 (B). Group 1 elements (K) dissociate completely, so KCH3CO2 will become K+ and CH3CO2- . Fe2+ and I- don't dissociate in water, so you get FeI2(s) precipitate.

Answer 2

Answer: Option (B) is the correct answer.

Explanation:

Reaction between the given reactants will be as follows.

   $Fe(C_{2}H_{3}O_{2})_{2} + KI \rightarrow K(C_{2}H_{3}O_{2})_{2} + FeI_{2}$

Therefore, we can see that the above reaction results in the formation of potassium acetate and iron(II) iodide.

Out of which iron(II) iodide $(FeI_{2})$ is the precipitate.