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. The large value indicates that the mutual force between binary mixture molecules can be considered as a week attractive force. The critical amplitude of specific heat under 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.

Conference Title

The Eighth Palestinian International Chemistry Conference (PICC 2015): Chemical Sciences Towards Knowledge Based Economy

Conference Country

Palestine

Conference Date

April 21, 2015 - April 22, 2015

Conference Sponsor

An-Najah N. University