The following cell reactions occur spontaneously: (c) Which of the three cell reactions delivers the highest voltage?

Video transcript

Hello. In this problem we are asked among the following spontaneous cell reactions identify the reaction that produces the highest voltage recall that oxidation occurs at the anodes and reduction hers at the cathode we will produce the highest voltage If the strongest oxidizing agent which will have the most positive electoral potential is our cathode. Recall that the strongest oxidizing agent, an oxidizing agent gets reduced. And so it will again take place at the cathode. And we want our strongest producing agent which will have the most negative electrode potential B. R. A node. Recall that the strongest reducing agent will get oxidized. The oxidation will take place at the and the voltage difference then will be the highest in this situation we are trying to identify our strongest oxidizing agent in our strongest reducing agent. So that's then right or rank things in terms of oxidizing agent strength. Looking at these spontaneous reactions which means they will proceed in the forward direction. So looking at the first one this tells us then why? Plus plus is a stronger oxidizing agent than W. Plus. So it is going to cause W. To be oxidized. W. Plus then is a stronger oxidizing agent than Z. Plus. From the second reaction Y plus is a stronger oxidizing agent than C. Plus and X Plus is a stronger oxidizing agent than Z. Plus. And the last one tells us that Y plus is a stronger oxidizing agent than X. Plus. So if we look at all of these, we see then that we always have. Why Plus on the left hand side. That means then Y plus is our strongest oxidizing agent. So that would be at the cathode. And we see that in all these cases then that Z. Is being oxidized to form Z. Plus. And so the strongest oxygen producing agent will be the one that is being oxidized. So in this case then V. Will be our strongest producing agent. And so the reactions of those reactions that we are provided this third, then one will produce the highest voltage where we have Y plus acting as our oxidizing agent at the cathode and Z. Are reducing agent acting at the anodes. And this corresponds to answer C. Thanks for watching. Hope this help.