Predicting if a metal will be dissolved in a solution


Moderators: Chem_Mod, Chem_Admin

Abigail Urbina 1K
Posts: 102
Joined: Thu Jul 27, 2017 3:01 am

Predicting if a metal will be dissolved in a solution

Postby Abigail Urbina 1K » Fri Mar 16, 2018 2:54 pm

How do we predict if a metal will be dissolved in a solution?

Ivy Lu 1C
Posts: 54
Joined: Thu Jul 27, 2017 3:00 am

Re: Predicting if a metal will be dissolved in a solution

Postby Ivy Lu 1C » Fri Mar 16, 2018 3:42 pm

A metal will dissolve in the solution if the standard cell potential of the redox reaction is positive, meaning the standard Gibbs free energy is negative because that would mean the reaction is spontaneous.

Rachel Wang
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

Re: Predicting if a metal will be dissolved in a solution

Postby Rachel Wang » Fri Mar 16, 2018 5:16 pm

Proceed about problem as normal; find E(nought) and plug into Nernst. If deltaG is positive the rxn is nonspont and thus the metal won't dissolve. If deltaG is negative the rxn is spont and thus the metal will dissolve.


Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

Who is online

Users browsing this forum: No registered users and 1 guest