Is supercritical fluid a endothermic or exothermic?

Answer 1

A supercritical fluid itself is not inherently endothermic or exothermic; rather, it refers to a state of a substance above its critical temperature and pressure, where it exhibits properties of both liquids and gases. The heat exchange associated with a supercritical fluid process depends on the specific reactions or phase changes occurring. For instance, dissolving substances in a supercritical fluid may involve endothermic or exothermic processes depending on the nature of the solute and solvent interactions.