00:01
To calculate the aluminum concentration, we need to use the nernst equation.
00:05
Before using the nernst equation, we need to calculate e -cell standard.
00:11
This will be e -cell standard for the redox reaction, 3ag plus plus aluminum solid goes to 3ag solid plus al3 plus.
00:30
So, e -cell standard will be the reduction potential for the cathode, whatever was reduced, and it is silver, being reduced to silver ion, and that potential is 0 .794, and then minus the reduction potential for what was oxidized, aluminum.
01:00
And we look up that for aluminum and it's one negative 1 .66 volts and we get a voltage of 2 .4594.
01:19
Then using the nernst equation, the actual e -cell which is provided at 2 .529, will be equal to e -cell standard 2 .4 59, we'll just go to three decimal places like we have here, minus 0 .05916 divided by n for the balanced chemical reaction, n is 3...