4 posts • Page 1 of 1
To determine if a metal will dissolve in a solution, you need to look at the redo reaction, separate it into two half reactions to balance, and then calculate the E of the cell. From there, you use this value to calculate the deltaGo. If this is negative, the forward reaction is spontaneous, so if the forward reaction involves the changing of a solid metal to an aqueous version of the metal, it will dissolve. If deltaG is positive, the forward reaction is not spontaneous, and under the same assumptions the metal will not dissolve.
To see if a metal will dissolve in the solution, you need to list out the corresponding cathode and anode reaction. In this way, the overall cell potential can be calculated. If the overall cell potential is positive, then the medal will dissolve in the solution.
A metal will dissolve if the overall redox reaction's cell potential is positive. You can determine if it is positive by finding the half reactions, manipulating them so the metal is being dissolved, find their respective potentials and subtracting anode from cathode. If the result is positive, then the reaction is spontaneous and metal will dissolve.
Who is online
Users browsing this forum: No registered users and 1 guest