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#Nernst equation calculator how to#

If the metal electrodes of a cell have close reduction potentials, the current produced will be small, whereas if the difference is significant, the magnitude of the current will be large. The standard reduction potential is established relative to the standard hydrogen electrode (SHE), defined as the potential of 0 V. The standard reduction potential E 0 E_0 E 0 is measured under standard conditions: 25 ☌, activity equal to 1 per ion, and pressure of 1 bar per gas involved in the reaction. The standard reduction potential E 0 E_0 E 0 of a material is a measure of its tendency to lose electrons. This tool allows calculating the potential of a cell with concentrations of the molecules. Worked Example of K Calculation Write the Nernst Equation: E Eo -(0.0592/n)log10Q Write the Nernst Equation for the equilibrium expression: Calculate Eo.

#Nernst equation calculator how to#

You can use it to determine the potential E of half-cells or full cells. How to use the Nernst Equation to figure out E(cell) when the concentrations aren't 1 mol/L.Q is just like the equilibrium expression, except you plug in you. This is the equation that uses the Nernst equation calculator.

It also can be substituted by concentration.

- Chemical activity of the molecule (atom, ion…) in the oxidized form.

F F F - Faraday constant, equal to the number of coulombs per mole of electrons (96,485.3 C/mol).

z z z - Number of moles of electrons transferred in the reaction (mol).

T T T - Temperature at which the reaction would occur, measured in Kelvins (K).

R R R - Gas constant, equal to 8.314 J/(K⋅mol).

E 0 E_0 E 0 - Standard reduction potential, also expressed in volts (V).

E E E - Reduction potential, expressed in volts (V).