Recent content by tinska.h

Hey, Thanks for your effort! Yeah it seems that there's very limited data regarding VO2+ -> V3+. I saw few articles where the graphs indicated much larger overpotential for the VO2+ and V3+ redox pair compared to V3+/V2+ and V5+/V4+.

Hey, Does anyone know a good source for overpotentials on carbon / graphite electrodes? Especially looking data for V4+ + 2H+ + e- <-> V3+ + H2O (+0.34V vs. SHE) overpotential. Or are there any ways to estimate the overpotentials? Thanks

Thanks for the help. In concentration cell, it would need to have concentration gradient. But what about in electroplating bath, where concentration is quite stable across the bath? How do I determine Ecell deviation from SHE for example in 0.1M CuSO4 or 5M CuSO4? Also, since SHEs are...

Hello everybody, this is probably a very novice question, but imagine anode and cathode, both made from copper immersed in CuSO4 aqueous solution (1M at standard temp and pressure + assuming electrodes are very near each other -> minimizing diffusion/migration resistance) and: Cu(2+) + 2e- ->...

Hey, a little bit of hijacking here, but anyways: In Daniell cell, why SO4 ion does not get bonded with Zinc at the electrode interface? I guess it has to do something with reduction potential or is it because its a soluble salt? But in that case, would that mean that solvent bondings are...

So the work in, means that all energy put in will convert into heat energy? The compressor's mechanical work is also heat?

I mean COP tells me the work in versus the heat energy being pumped. However since not all work in is converted to heat output, I'm looking for pure number of heat in vs. heat out, neglecting all other losses. I'm in an understanding that COP just tells you the additional work needed vs. heat...

Greetings, I wonder what are the usual thermal efficiency for vapor compressor (refrigeration cycle), and only speaking thermal efficiency. I mean COP describes the heat energy pumped vs. work put in. But since some of the work is converted to mechanical energy and to other forms than heat...