Viscosité et structure des sels fondus

Toward Physical Modeling of Laser Welding: Thermophysics Revisited

“…At least, the dependence of c p is so small compared to the dependences of η and λ on T that it can be neglected in the calculation of Pr. This assumption is strongly supported by the findings of Murgulescu and Telea [26], who investigated the heat capacity of four different iodides and did not find any significant dependence of c p on T [26].…”

Ion selective electrodes, potentiometry, and potentiometric titrations

“…acetic acid Ca-Amalgam Ca-Amalgam ) Na-AmalgamJ Cd-Amalgam) Pb-Amalgam ) Pb-Amalgam Na-Amalgam Na-Amalgam Zn-Amalgam Bi-Pb-Amalgam Cd-In-Amalgam) Cd-Tl-Amalgam j Pb-Tl-Amalgam Sb Cd Cu Cu Pb Hg 8 Ag V Zn Determine standard potentials at several temperatures (658) Used to determine activity coefficients and transference numbers of NaCl and (657) CaCl2 solutions Atmospheric 02 affects potential when concentration of Cd or Pb in amalgam is low (596,597) Used in potentiometric titration of Pb(N08)2 and Pb(OAc)2. Interferences and (15,16) equivalents are discussed Used to measure activity coefficients of NaCl in NaCl-NaC104-H20 mixtures (221) Determine standard potentials at several temperatures (659) Behavior in alkali; comparison with theory; reports standard potential (89) Potential measured at various temperatures and Bi-Pb ratios (1031) Determined potentials of various amalgam compositions and compared to theory (222) Determined the effect of T1 on potential of Pb-Amalgam electrode (595) Used to determine dissociation constant of [SbO(tartrate)] ~complex (899) Fabrication of thin film Cd electrodes; determination of standard potential (654) Potential in acidic media determined by both [Cu2+] and [Cu+] (90) Used in thermodynamic studies of CuS0v-H2S0t-H20 system (467) Fabrication of tmn film Pb electrodes by vapor deposition on glass (965) Fabrication and use in determination of halides and thiocyanates in blood (1030) Fabrication and use in potentiometric titrations _ (357) Determination of formal potential in perchloric acid at several temperatures (418) Use in potentiometric determination of thiourea (79) Determination of behavior in aqueous solution (444) Determination of potential in pyrophosphate solutions Bi-BiOOH'l Preparation of electrode and use in potentiometric titration with EDTA (689) Bi-Bi208 J…”

Problem solving - an interactive active method for teaching the thermokinetic concept

“…The technique of teaching thermokinetic concepts by using problemsolving strategy involves deducing the thermokinetics laws based on previously acquired knowledge about reversible (opposite) reactions from thermodynamic point of view. 7,8,9,10 These notions connect the direct and inverse chemical reaction rate constants in opposite reactions with the equilibrium constant and also the activation energies for the direct and inverse reactions with the enthalpy of the direct reaction. The importance of thermokinetic laws application in evaluating kinetic parameters is outlined by the fact that the equilibrium constant and the enthalpy of the direct reaction are much easier to measure experimentally than the rate constants.…”