This page emphasizes the need for a universal standard in electrical potential measurements during chemical reactions, highlighting the standard hydrogen electrode (SHE) as the reference point with a ...This page emphasizes the need for a universal standard in electrical potential measurements during chemical reactions, highlighting the standard hydrogen electrode (SHE) as the reference point with a defined potential of zero. It explains the SHE's composition and conditions, and illustrates its application in calculating voltages for half-reactions, specifically in zinc and copper reactions, by using standard reduction potentials to determine cell electromotive force (emf).
