A compound has the empirical formula CoCl₃ ∙ 5NH₃.One mole of it yields three moles of silver chloride when treated with silver nitrate.Ammonia is not removed by treatment with concentrated sulfuric acid.A reasonable formula for the compound is ________. A)[Co(NH₃)₅]Cl₃ B)CoCl₃ ∙ 5NH₃ C)[Co(NH₃)₄Cl]Cl₂ ∙ NH₃ D)[Co(NH₃)₅Cl]Cl₂ E)[Co(NH₃)₄Cl₂]Cl ∙ NH₃

Question

Quizplus · Accepted Answer

The compound yields three moles of silver chloride when treated with silver nitrate, which indicates that there are three chloride ions outside the coordination sphere. The empirical formula of the compound is CoCl3 · 5NH3, which suggests that there are five ammonia molecules coordinated to the cobalt ion. The fact that ammonia is not removed by treatment with concentrated sulfuric acid indicates that the ammonia molecules are strongly bound to the cobalt ion. Therefore, the reasonable formula for the compound is [Co(NH3)5]Cl3.

A Compound Has the Empirical Formula CoCl3 ∙ 5NH3

A Compound Has the Empirical Formula CoCl₃ ∙ 5NH₃