00:01
So from the question here, we are to calculate the potential of the copper electrode immersed in a 0 .0 440m, c u .03 to nb, 0 .075m in nacl and saturated with cul.
00:20
So let's look at the first one.
00:22
So before that we have the next equation which is given here and this is going to help us getting the answers the next equation so here the e not is a standard electric potential the r is a gas constant the t is a temperature in kelvin the is the number of most of electron the f is a fire day constant and the q is the reaction quotient the q is a reaction quotient so at 25 degrees celsius the equation becomes e equals e equals or e degree minus 0 .0592 over n log q so let's look at the first one the a so with the a in focus we have with the a in focus we have two electrons plus c u two plus goes to c u which is solid where the e knot is equal to plus 0 .337v.
01:48
So using the next equation that i mentioned earlier, using the next equation, remember it's here, using the next equation we have e equals e0 minus 0 .0592 all over and log q.
02:26
And so this becomes our n is giving us 2.
02:41
So we have e equals, sorry, e to the power 0 plus 0 .337v.
02:53
So in all, we have something like this...