Write the formula for pentaamminechlorocobalt(III) chloride. A) [Co(NH₃)₅Cl]Cl B) [Co(NH₃)₅Cl]Cl₂ C) [Co(NH₃)₅Cl]Cl₃ D) [Co(NH₃)₅Cl]Cl₄ E) None of these choices is correct.

Question

Quizplus · Accepted Answer

The formula for pentaamminechlorocobalt (III) chloride is [Co(NH3)5Cl]Cl2. The shorthand version of the formula uses the ligand NH3 instead of the longer IUPAC name, and it indicates the charge on the complex ion with Roman numerals in parentheses following the metal's name. The correct shorthand version of the formula is [Co(NH3)5Cl]Cl3. The only choice that matches this formula with the correct charge on the chloride counterion is B, which has Cl3 instead of the correct Cl2.

Write the Formula for Pentaamminechlorocobalt(III) Chloride