This document discusses the electrochemical reactions involving AgCl and MnO2, including the Nernst equation and the calculation of the equilibrium constant.
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[...] On s'intéresse aux frontières et / On doit définir une concentration maximale en ion on here in addition, the concentration of ions [...]
[...] Mn²?(aq) The thermodynamically favored reaction is the reaction between. MnO??and Mn²? : it is a medium mutation reaction Reduction : Oxydation : Balance : In balance : Digital Application : Equation Balance : Donc les ions are largely in excess according to the stoichiometric proportions of the reaction. reacts = reacted reacted Therefore, permanganate ions remain in excess, the are therefore the limiting reactant.", " réagiremaining remaining reacted A.N = 3,3 × mol n (MnO2(s) )formed = = m (MnO2(s))formed = n (MnO2(s))formed × M MnO2 = × M MnO2 A.N M MnO2 = 54,9+2 × 16 = 86,9 g.mol-1 m (MnO2(s))formed = 0,145 g Application numérique : Bilan : or even: In Balance : A.N »> quasi-total and quantitative reaction Exercise 2 - Standard Potential of a Couple Calculate the standard potential of the AgCl couple(/Ag( On donne pKs (AgCl(s)/Ag(s) = 9.8 and E° Ag+/Ag = 0.80V Method : Write the precipitation reaction and express its equilibrium thermodynamic constant. [...]
[...] Write the two redox equations and the associated Nernst relations. Verify that the two oxidants have the same potential as well as the two reducers. Write the equality of the potentials of the two redox couples. Species : no Ag in the experiment : , 0 Dissolution of : AgCl(s) Ag+ + Cl- Ks = Couple : Ag+ + e ? [...]
[...] Equation de Nernst Couple AgCl : AgCl(s) + Ag(s) + From an electrochemical point of view, equations and are equivalent, as they both involve the Argent au species at the oxidation degree and 0. [...]
