<p>This isn't homework help- I'm just looking for someone who knows a bit about chemistry that wouldn't mind me PMing them a bit with some random questions. I'm really just having trouble understanding the concept of how to calculate the standard emf of cells. It's in the cell voltage unit with the (Ecell) and all of that.</p>
<p>Thank you!</p>
<p>Message me, with your questions and basically the topics that they come from and I can help you. I’m taking chem as well</p>
<p>Well, I never understood it either really.</p>
<p>Um, you put an electrode in a solution A. One of two things happen: either some of the free electrons in the electrode flow into the solution, or some of the electrons flow to the end of the electrode. </p>
<p>When you have two solutions, A, B, and you CONNECT the electrodes, then there are four possible interactions, and 2 outcomes (either electrons flowing to A or electrons flowing to B). To figure out which way they flow one logically adds the relevant electric potentials (is careful with signs). </p>
<p>And of course we need a trusty salt bridge to prolong current’s flow.</p>
<p>i took AP Chem this past year, and the last thing we covered was electronic cells. Hit me up</p>
<p>If you post in the AP forum, someone will help you - especially when it gets closer to AP time and everyone is frantically reviewing.</p>