The discussion centers on the interaction between dry ice and acetone, specifically whether it constitutes an endothermic reaction. Participants clarify that the process is primarily a heat exchange rather than a chemical reaction, with acetone acting as a heat exchange fluid. The dissolution of CO2 in acetone is mentioned as endothermic, contributing to temperature reduction, particularly at around -78°C. However, there is no consensus on the extent of this effect, and participants express frustration over conflicting information and the complexities of thermodynamics. One contributor references a study on gas solubility in hydrocarbons, highlighting the challenges in predicting gas solubility and the thermodynamic changes involved in dissolution. The conversation concludes with a request for resources on thermodynamic equations related to this topic.