Four different functions representing four self proposed mixing rules to predict the activity coefficient of single salt-double solvent (e.g. LiPF6 in 40% Ethanol 60% water solvent)
Using two solvents in practice is better than using only one pure solvent (getting the best of both worlds and negating the drawbacks of using a single pure solvent).
Most literature that deal with single salt-double solvent electrolytes present activity coefficient data in terms of different ratios (e.g. pure ethanol, 1:9 ethanol:water, 2:8 ethanol:Water, and so on). However, some papers might not have data for some proportions that we want (e.g. we want to know the activity coefficient of 1:1 EC:EMC but papers only have pure EC and pure EMC data, or we want to know 4:6 EC:EMC but there's only literature data on 2:8 or 7:3 EC:EMC).
This repo contains 4 different mixing rules that calculate/predict what activity coefficient of mixed solvents are from pure solvent values (or other propoertions of mized solvent values). The second mixing rules, the Mole Fraction average, is the most accurate of the four.