// multi-utility computation suite · offline · instant · precise
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sci.Nernst-equation Calculator
Calculates half-cell potential from standard potential and ion activities using E = E° − (RT/nF)ln Q, and solves for ion concentration from measured potential. Silver electrode in 0.01 M AgNO₃: E = +0.799 − (0.0592/1)log(0.01) = +0.917 V vs SHE.
Inputs
E0 V
Reference formula or conversion factor shown for context.
N Elec
Count of items or occurrences.
T K
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Q Ratio
Reference formula or conversion factor shown for context.
Results
cell potential E (V)
Sample size or count used in the calculation.
E at 25°C (simplified)
The value at the specified point or condition.
E⁰ standard potential (V)
Sample size or count used in the calculation.
E = E⁰ − (RT/nF)·ln(Q)
Sample size or count used in the calculation.
RT/F at 298 K
The value at the specified point or condition.
equilibrium Q
Reference formula or conversion factor shown for context.