Heat exchange calorimetry for estimating heats of solution

A simplified calorimeter has been developed for estimating heats of solution by means of heat exchange calorimetry which was originally proposed by the authors. An analog operational technique is preferred for analyses of thermal phenomena observed in the sample vessel. Two recommended chemical systems are utilized to test the validity of the proposed methodology and instrumentation, the correct performance of the constructed assembly, and to evaluate the device in terms of accuracy and precision. The heat of reaction of solid THAM (tris(hydroxymethyl)aminomethane) with 0.100 M HCl as an exothermic reaction, and the heat of solution of potassium chloride crystals in water as an endothermic reaction were estimated in this paper. Both of the estimated results agreed satisfactorily with literature values to prove the suitability of the proposed calorimetry.