It is! One of my problems as an undergrad was just trying to understand what we were trying to do. If you look at is as just a comparison in order to come up with the rest of the values (ie like a weighing dish that gets tared), then the rest comes out of it.
Nice Video Bro,But One Question?In the first example of SHE when Copper electrode is used as a test electrode the Copper is much easily reduced as Compared to hydrogen so we obtain a positive value of voltage,But in the second example when Zinc is used as a test electrode then Zinc is not so much easily reduced as compared to Hydrogen instead it is oxidized so we must take the value of voltage negative for SHE Vs Zinc electrode.
I made the video such that the meter is hooked up to make the voltage positive in each case of the copper, silver, and zinc half-cells connected to the SHE. I deal with the signs in another video when talking about standard reduction potentials and I'll make a link to in the next comment in just a moment.
the zinc half-reaction is wrong, cell potential would be -0.76 as the electrons flow in the opposite direction as seen if you compare the hydrogen zinc cell to the hydrogen copper or hydrogen silver cell
At this point, the sign only dictates which way the meter is hooked up. If you swap the leads then the *meter* sign changes. As I stated in the video, I'm pretending to hook them up such that the meter sign is positive. This one leads up to the use of standard *reduction* cell potentials. I have a video that covers it and deals with the proper signs. for half-cell potentials.
I'm confused: if the voltage for the non hydrogen half reaction is positive, don't you kep it the same? What if it's negative? What are the tules for this?
Can you sent the link? Cuz there are too many vidoes and I don't know which is the one you're mentioning. Can you message it to me in my inbox? Thanks.
This video is amazing. Everything is so clear, and the pace is easy to follow. Electrochemistry made easy. Thank you!
This helped me to understand well! Thank you Alan Earhart!
Very nice video 👏👏
How did you know which electrode was the cathode and which was the anode before you put the + and - signs?
Very helpful analogy. It is confusing to start studying the details of how the SHE works when I have no idea of the point of it.
It is! One of my problems as an undergrad was just trying to understand what we were trying to do. If you look at is as just a comparison in order to come up with the rest of the values (ie like a weighing dish that gets tared), then the rest comes out of it.
Why is zinc the negative cathode when E= positive 0.76?
Very nice work. Keep it up.
This *vedio* is sooo amazing👍👌
THIS IS REALLY GOOD
Nice Video Bro,But One Question?In the first example of SHE when Copper electrode is used as a test electrode the Copper is much easily reduced as Compared to hydrogen so we obtain a positive value of voltage,But in the second example when Zinc is used as a test electrode then Zinc is not so much easily reduced as compared to Hydrogen instead it is oxidized so we must take the value of voltage negative for SHE Vs Zinc electrode.
right
can Zn-SHE cell be used to power any device?
I made the video such that the meter is hooked up to make the voltage positive in each case of the copper, silver, and zinc half-cells connected to the SHE. I deal with the signs in another video when talking about standard reduction potentials and I'll make a link to in the next comment in just a moment.
the zinc half-reaction is wrong, cell potential would be -0.76 as the electrons flow in the opposite direction as seen if you compare the hydrogen zinc cell to the hydrogen copper or hydrogen silver cell
I do explain in the video what I'm doing with respect to the sign.
Thanks for the excellent job! Don't get confused, lads, there is a slight mistake.In case of Zn, Eo should be negative.
At this point, the sign only dictates which way the meter is hooked up. If you swap the leads then the *meter* sign changes. As I stated in the video, I'm pretending to hook them up such that the meter sign is positive.
This one leads up to the use of standard *reduction* cell potentials. I have a video that covers it and deals with the proper signs. for half-cell potentials.
thank you so much
Nice take on it :)
You should watch the video on "Standard Reduction Potentials".
It really helped me! ty
You can tell by the way the meter is hooked up- which lead goes to which electrode. I don't actually hook one up in this video but I mention it.
I'm confused: if the voltage for the non hydrogen half reaction is positive, don't you kep it the same? What if it's negative? What are the tules for this?
Can you sent the link? Cuz there are too many vidoes and I don't know which is the one you're mentioning. Can you message it to me in my inbox? Thanks.
hi, how do you know which way the electron transfer is going?
You can use the Table of Standard Reduction Potential
very much helpful
Shouldn't the -ve end be the cathode, what happens at 5:25???
I don't understand what you mean on the first part. As to the other part, I was just pausing to collect my thoughts.
Thanks
great
"Hydrogion"
Thanks