The temperature-dependent form of the extended Debye- Hückel equation 7-6 is

where is the (dimensionless) dielectric constant€  of water, T is temperature (K), z is the charge of the ion, is ionic strength (mol/L), and is the ion size parameter (pm). The dependence of on temperature is
ε = 79.755e(- 4.6 × 10-3)(T-293.15)
Calculate the activity coefficient of SO24- at 50.00 C when μ = 0.100 M. Compare your value with the one in Table 7-1.

Transcribed Image Text:

(-1,825 × 106)(eM-3/2z2 log γ