Energy+Changes+and+Chemical+Reactions



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Heat released or absorbed by reaction at a constant pressure is the enthalpy. The __endothermic__ process absorbs the heat(hint:endo meaning in) and the __exothermic__ process (exo meaning out like export, get it)released the heat from its surroundings. "Heat of reaction, symbolized as Δ//H, it is the amount of heat that must be added or removed during chemical reaction to keep substance present at same temperature. A thermochemical equation, the enthalpy change, is shown of the reaction//

In other terms Enthalpy refers to energy At Constant Pressure. It comes from the Greek word "Enthalpo" meaning warming up.

media type="custom" key="3700337"This Is short preview of our own Heat of Reaction lab.



=Useful Sites for reference:= ====__**Lecture Help**__-By Clicking [|Here] This is an External Link To Lecture Help. This is A very useful site when you need more practice/practice problems not only for this topic of chemistry but for others.==== [|Energy Changes in Chemical Reactions]-This site breaks down and help you understand more of the basics

Example Problems:

media type="custom" key="3725543" As you can see above this is an example problem. We use the Dimensional Analysis to convert.