Unit 9: Practical Thermochemistry
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It. Is. Our. Last. UNIT!!! The beginning of the end has us reviewing enthalpy and then discussing entropy -- the randomness in a system. |
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Ultimately a reaction is thermodynamically favorable if it produces energy that can do work, in other words if it has a negative Gibbs free energy. |
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Energy, specifically electricity, is the movement of electrons. So here we discuss capturing that movement in Galvanic (voltaic) cells -- batteries. We start by reviewing the basics of reduction and oxidation and wrap up with the key parts of a galvanic cell. |
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The standard cell potentials are calculated at standard conditions, 298K and 1 M. However how do you calculate the cell potential at different temperatures and concentrations. In this lesson we look at the Nernst equation and see how cell potential can change. |
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And finally, electrolyic cells! Applying electrochemistry to separate ions or plate metals. This lesson is fairly short as you just need to be able to do some very basic calculations on electrolytic cells. |
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