Dissolving  [ENDORSED]

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Hellen Truong 2J
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Postby Hellen Truong 2J » Sun Feb 25, 2018 9:57 pm

How do you know if a metal will dissolve in solution?

Caroline Cox 1H
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Joined: Fri Sep 29, 2017 7:03 am

Re: Dissolving

Postby Caroline Cox 1H » Sun Feb 25, 2018 10:42 pm

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.

Ya Gao
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Re: Dissolving

Postby Ya Gao » Sun Feb 25, 2018 11:31 pm

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.

Alexandria Weinberger
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Re: Dissolving  [ENDORSED]

Postby Alexandria Weinberger » Mon Feb 26, 2018 1:55 pm

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.

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