The excess molar enthalpy of (nitrogen+dimethyl ketone)(g) from temperatures of 333.2 K to 423.2 K

Abstract

A differential flow mixing calorimeter has been used to measure the excess molar enthalpyHmEof (nitrogen+dimethyl ketone)(g) at standard atmospheric pressure over the temperature range 333.2 K to 423.2 K. The measurements are analysed using the corresponding states correlation of Tsonopoulos using his parameteraas a disposable parameter. The measurements are found to be consistent with measurements of the second virial coefficientB, the isothermal Joule–Thomson coefficient φ=B−T(dB/dT) and the pressure derivative χ=−T2(d2B/dT2) of the heat capacity of dimethyl ketone. As theHmEmeasurements are of good accuracy (nitrogen+dimethyl ketone)(g) is recommended as a test system for checking the correct operation of gas phase mixing calorimeters.