A Compound Has the Empirical Formula CoCl₃ ∙ 5NH₃

question 12

Multiple Choice

A compound has the empirical formula CoCl₃ ∙ 5NH₃. One mole of it yields two 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

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