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Ruby Richter 2L wrote:What exactly is the standard reduction potential and why does it have to be positive for the reaction to be spontaneous?
The standard reduction potential is tabulated for compounds with respect to standard hydrogen electrode. It is a measure of the electron-pulling power of the reaction occurring at the electrode. It has to be positive for the reaction to be spontaneous if the right side is cathode, the electrode to where the electrons go; if it is negative, then the reaction would proceed in the reverse direction.
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