17. The EMF of the circuit Cd|CdI2(aq)|AgI,Ag at 298 K and various concentrations of CdI2 has the following values:
s, M 0.0039 0.0098 0.0197 0.0389 0.0968 0.202 0.488 1.027
E, B 0.464 0.442 0.432 0.425 0.410 0.399 0.386 0.374
Using the extrapolation method, determine the standard emf of the specified element and calculate the average activity coefficients for CdI2 in solutions: a) 0.0968 M; b) 0.202; c) 0.488 M; d) 0.1027

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