ACTIVATION PARAMETERS FOR THE ELECTRICAL-CONDUCTIVITY OF MIXED NITRATE WATER-SYSTEMS, FROM FUSED-SALTS TO DILUTE-SOLUTIONS

The electrical conductivity of two nitrate-water systems has been meas ured over the water mole fraction range 0-0.98 and over temperature ra nges situated between 350-385 K, at atmospheric pressure. These system s are: AgNO3-TiNO3-Cd(NO3)(2)-H2O and AgNO3-TlNO3-Ca(NO3)(2)-H2O, wher e the mole fractions in the anhydrous melts are: X(AgNO3) = 0.464, X(T lNO3) = 0.436 and X(M(NO3)(2))= 0.100 with M = Cd or Ca. The sets of e quivalent electrical conductivity data obtained from these measurement s are discussed in terms of the free energy, enthalpy and entropy of a ctivation for this transport process. These values are found to be con sistent with those for other nitrate-water systems previously studied.