Dissolving metal in a solution


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Katie Blann 1E
Posts: 29
Joined: Tue Nov 15, 2016 3:00 am

Dissolving metal in a solution

Postby Katie Blann 1E » Sun Feb 25, 2018 7:04 pm

How do we predict if a metal will dissolve in a solution?

Lourick Bustamante 1B
Posts: 50
Joined: Wed Nov 16, 2016 3:02 am

Re: Dissolving metal in a solution

Postby Lourick Bustamante 1B » Sun Feb 25, 2018 7:13 pm

Given the metal and the solution that you are observing, you form a balanced chemical equation using the half-reactions and their E° values. Once you calculate the E° value for the balance chemical equation, you get a value that is either positive or negative. If E° is negative, then ΔG is positive, and the reaction is not favorable. Therefore, the reaction WILL NOT result in the solution dissolving the metal. If E° is positive, then ΔG is negative, and the reaction is favorable. Therefore, the reaction WILL result in the solution dissolving the metal.

Annalise Eder 2L
Posts: 49
Joined: Sat Jul 22, 2017 3:01 am

Re: Dissolving metal in a solution

Postby Annalise Eder 2L » Sun Feb 25, 2018 7:16 pm

You will want to balance the equation with the solid metal on the reactants side and the aqueous dissociated ions on the product side. If the formation of the ions is favorable, the metal will dissolve in the solution.

RohanGupta1G
Posts: 34
Joined: Sat Jul 22, 2017 3:00 am

Re: Dissolving metal in a solution

Postby RohanGupta1G » Thu Mar 01, 2018 8:34 am

Figure out if the E nott value is positive


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