Write the Nernst equation for the following half
Answers
Answer:
species involved in the electrode reaction is unity.This need not be always true.
Nernst shows that for the electrode reaction:
straight M to the power of straight n plus end exponent left parenthesis aq right parenthesis space plus ne to the power of minus space rightwards arrow space straight M left parenthesis straight s right parenthesis
the electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by:
straight E subscript bevelled fraction numerator left parenthesis straight M to the power of straight n plus end exponent over denominator straight M end fraction right parenthesis end subscript space equals space straight E subscript bevelled straight M to the power of straight n plus end exponent over straight M end subscript superscript 0 space minus RT over nF space In space straight M over straight M to the power of straight n plus end exponent
but concentration of solid M is taken as unity as we have
straight E subscript bevelled fraction numerator left parenthesis straight M to the power of straight n plus end exponent over denominator straight M end fraction right parenthesis end subscript space equals space straight E subscript bevelled straight M to the power of straight n plus end exponent over straight M end subscript superscript 0 space minus RT over nF space In space 1 over straight M to the power of straight n plus end exponent
R is gas constant (8.314 JK–1 mol–1),
F is Faraday constant (96487 C mol–1), T is temperature in kelvin and [Mn+] is the concentration of the species.
Answer:
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