Writing coordination compound formulas

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Dan 4k
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Joined: Fri Sep 25, 2015 3:00 am

Writing coordination compound formulas

Postby Dan 4k » Thu Nov 19, 2015 12:22 pm

When writing the formula for a coordination compound, do you base the alphabetical order off of the name of the molecules and ions, or off of the actual atoms. For example: pentaamminechloronickel (III) chloride, would the formula be [NiCl(NH3)5]Cl2 or [Ni(NH3)5Cl]Cl2. Basically would you base alphabetization off of the N in NH3 and the Cl or off of the "a" in ammine and the "c" in chloro?

Kim Vu 2G
Posts: 29
Joined: Fri Sep 25, 2015 3:00 am

Re: Writing coordination compound formulas

Postby Kim Vu 2G » Thu Nov 19, 2015 1:12 pm

For pentaamminechloronickel (III) chloride, both of the formulas of [Ni(NH3)5Cl]Cl2 and [NiCl(NH3)5]Cl2 work and for the naming ligand, the letter a in ammine comes before the letter c in chloro so ammine gets named before chloro.

Dan 4k
Posts: 9
Joined: Fri Sep 25, 2015 3:00 am

Calculating Cell Potential

Postby Dan 4k » Mon Feb 01, 2016 1:36 pm

If E(cell)=E(cathode)-E(anode), why, when the E for the oxidation(anode)=-1.50V, and the E for the reduction(cathode)=0.96V, is the answer 0.96V-1.50V=-0.54V. Shouldn't it be 0.96V-(-1.50V)??


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