losangeleswera.blogg.se - Intro to engineering thermodynamics pdf 6 e

Those reactions must be powered by other reactions that are going downhill.

Reactions that are energetically "uphill" cannot happen easily by themselves.

Systems always go to lower energy if possible.

Exothermic reactions (the downhill ones) occur very easily endothermic reactions do not (those are the uphill ones). It is useful to think of reactions as "going downhill" or "going uphill" because one of these situations should seem inherently easier than the other (especially if you've ever been skiing). On the other hand, reactions that cost energy (the ones that go uphill on the reaction profile, like carbohydrate synthesis) are referred to as endothermic (or sometimes endergonic). Nanoscale Thermoelectrics By Xiaodong Wang and Zhiming M. Modern Engineering Thermodynamics By Robert T. Introduction To The Thermodynamics Of Materials By David R. Fundamentals of Engineering Thermodynamics By Michael J. In reaction profiles, these reactions go downhill in energy as the reaction occurs from the left side of the diagram to the right. Engineering Thermodynamics of Thermal Radiation By Richard Petela. Reactions that produce energy, like ATP hydrolysis, are referred to as exothermic reactions (or sometimes exergonic, meaning roughly the same thing). It is one of the key ingredients needed to make the reaction happen.

In this case, energy is a reactant, not a product.