Novel experimental values ofthe limiting activity coefficients and standardmolar enthalpies of solution in
N-methylformamide at 298.15K are reported and used to calculate the thermodynamic functions of solvation.We
compare the plots ofthe standard molar Gibbs free energy againstthe standard molar enthalpy
of solvation oflow polar molecules in N-methylformamide, N,N-dimethylformamide, and formamide. The
solvophobic effect is responsible for the deviations of the data points from the straight line corresponding
to a correlation between thermodynamic functions of solvation in aprotic solvents. It is shown that
the solvophobic effects are strong in formamide solutions, significantly weaker in N-methylformamide,
and very weak in N,N-dimethylformamide, which coincides with the average number of intermolecular
hydrogen bonds per unit volume of these solvents. Behavior of solutions in binary solvents composed of
N-methylformamide or formamide mixed with water and ethylene glycol and a possibility to tune the
solvophobic effect by changing the solvent composition are also considered.