NaCl vs. NiCl

Moderators: Chem_Mod, Chem_Admin

Aria Soeprono 2F
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

NaCl vs. NiCl

Postby Aria Soeprono 2F » Mon Nov 26, 2018 3:18 pm

Dr. Lavelle mentioned that salt will completely dissolve so that each ion is surrounded by water molecules, but NiCl won't, and instead will become a coordination compound. Can someone explain why this happens?

EllerySchlingmann1E
Posts: 76
Joined: Fri Sep 28, 2018 12:24 am

Re: NaCl vs. NiCl

Postby EllerySchlingmann1E » Mon Nov 26, 2018 4:17 pm

For salt, the water completely dissociates the Na and Cl ions because its polarity; the water surrounds all of the separated ions. A similar thing happens with NiCl but here the water actually bonds to the Ni to create a coordinate compound instead of just being electrostatically attracted like with the Na. Hope that helps!

Albert Duong 4C
Posts: 66
Joined: Fri Sep 28, 2018 12:17 am
Been upvoted: 1 time

Re: NaCl vs. NiCl

Postby Albert Duong 4C » Mon Nov 26, 2018 10:04 pm

To add on, unlike alkali metals like Na, transition metals like Ni are even smaller, highly charged cations and have many empty d-orbitals to accept electrons from groups of ions or molecules that are able to donate an electron pair(aka ligands) to form a coordinate compound.

Tyler Vu 4I
Posts: 30
Joined: Fri Sep 28, 2018 12:27 am

Re: NaCl vs. NiCl

Postby Tyler Vu 4I » Mon Nov 26, 2018 10:13 pm

Water completely dissociates Na and Cl in salt and surrounds the atoms. The water donates electron pairs to Ni in NiCl and forms coordinate compounds.


Return to “Shape, Structure, Coordination Number, Ligands”

Who is online

Users browsing this forum: No registered users and 2 guests