electrochemistry - Why does the reaction between copper(II) ion and . . . $\begingroup$ @M Farooq so if I understand it right, it is due to the fact that the CuI is extremely insoluble and readily precipitated that leads to basically the Cu+ concentration always being extremely low, which is what shifts the eqm of the reaction between Cu2+ and I- to the right and this enables the reaction to proceed despite having a negative E knot?
Why is the reduction potential of Cu$^{2+}$ less than Cu$^+$? The reduction potential is the electrical potential of the species to be reduced It's basically how positive it is (compared to a reference, since voltages are relative) Tables list the following
Why can Cu have an oxidation number of +2? Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
Why is Cu(II) more stable than Cu(I)? - Chemistry Stack Exchange The example of this fact is provided by Cu2+ which has a smaller cationic radius due to a stronger hold of the nucleus on the remaining 27 electrons after the loss of two as compared to Cu+ where only one electron is lost and the hold of the nucleus is less
Is it possible for Cu to reduce Cu2+? - Chemistry Stack Exchange Zinc is higher in the reactivity series than copper, so simply by placing a piece of zinc metal into a copper sulphate solution, you will get a displacement reaction where the zinc metal loses electrons and becomes $\ce{Zn^2+}$ ions, and $\ce{Cu^2+}$ ions gain those two electrons to become copper metal