The
dynamic shear viscosity of a binary liquid mixture of water and phenol
has been measured at different temperatures (32.0 ℃≤T≤75.0 ℃) and
different concentrations (0.00% up to 100.00% by weight of phenol) by
using glass capillary viscometer and Brookfield viscometer model DV-I+.
The critical temperature and critical concentration have been determined
to be 67.0 ℃ and 33.90% by weight of phenol respectively. The mode
coupling theory (MCT) has been used to calculate the value of background
viscosity (noncritical part of shear viscosity) η_0=0.684 cP, the Debye
momentum cutoff q_D=0.786 Å^(-1) and the MCT constant A = 0.050. The
intermolecular force range L of water and phenol molecules in a binary
mixture has been calculated to be 11.17 Å, this large value indicates
that the mutual force between binary mixture molecules considered as a
week attractive force. The critical amplitude of specific heat at
constant pressure at critical concentration and above critical
temperature C_pc has been found to be 259.16 J/(kg.K) by using the two
scale factor university.