Table 4: Measured refractive indices ( and ) of 4-molar solution and validity of Vuks equation.

Temp. (K) LHS of  + 2RHS of     − 0.5

Wavelength (404 nm)

3431.51891.4771.4912.22344.22344.2145
3331.51431.47511.48822.21504.21504.2057
3231.51351.47481.48772.21364.21364.2041
3131.50361.47511.48462.20424.20424.1943
3031.50251.47571.48462.20434.20434.1943

Wavelength (546 nm)

3431.51281.46671.48212.19704.19704.1864
3331.4991.46431.47592.17844.17844.1668
3231.49871.46411.47562.17784.17784.1658
3131.49871.46711.47762.18364.18364.1722
3031.49691.46621.47642.18014.18014.1684

Wavelength (578 nm)

3431.49881.45671.47072.16354.16354.1504
3331.49321.45531.46792.15514.15514.1415
3231.49211.45421.46682.15194.15194.1380
3131.48921.45451.46612.14964.14964.1358
3031.48661.45381.46472.14574.14574.1314