# Questions tagged [nernst-equation]

For questions regarding when and how to use the Nernst equation or exploring the theory by the equation.

16 questions
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### Why is the reaction quotient Q always equal to one at standard state?

I understand that at equilibrium, $Q$ is equal to $K$. This should not depend how I express concentrations (as amount of substance concentrations $c$ or as partial pressures $p$ or as molality $b$ or ...
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I am using a $\pu{1.5 M}~\ce{KCl}$ solution as electrolyte and copper and aluminium electrodes but no salt bridge. So basically there is only one beaker with the two electrodes in it with the $\pu{1.5 ... 1answer 155 views ### Voltaic cell and Nernst equation It is given voltaic cell$\ce{Cu}|\ce{CuSO4}(\pu{10^-3 M})||\ce{CH3COONa}(10^{-2})|\ce{Pt}(\ce{H2})(\pu{1 atm})$. Find the potential at$\pu{50^\circ C}$. Given$K_\mathrm{a}$for$H= 1.8 \times ...
My teacher told me that in the Nernst equation, N was the number of electrons transferred. For example, $n = 2$ in $\ce{Ni^{2+} + Zn -> Zn^{2+} + Ni}$. However, say all of the coefficients were ...