Enthalpy, H is a state function used to describe the heat changes that occur in a reaction under constant pressure.
{"Image DocumentName": "Enthalpy, H is a state function used to describe the heat changes that occur in a reaction under constant pressure.", "Image ImageDescription": "When a reaction is allowed to take place in an open container, a quantity of heat proportional to the quantity of matter present, will be released or absorbed. This flow of heat is the enthalpy change, \u0394H. The units for \u0394H are kJ or kJ/mol. Reactions that release heat are termed exothermic. They have negative values of \u0394H. Reactions that absorb heat are termed endothermic. They have positive values of \u0394H. Generally processes that feel cold (like an ice pack) are endothermic and processes that feel hot (like a fire) are exothermic. Enthalpy.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}