Work reaction coordinate diagram free energy g is

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ergy change of a reaction tells whether or not the reaction occurs spontaneously •  Biologists want to know which reactions occur spontaneously and which require input of energy •  To do so, they need to determine energy changes that occur in chemical reactions •  A living system’s free energy is energy that is available to do work when temperature and pressure are uniform, as in a living cell Free-Energy Change, ΔG •  The change in free energy (∆G) during a process is related to the change in enthalpy, or change in total energy (∆H), change in entropy (∆S), and temperature in Kelvin (T): ∆G = ∆H – T∆S •  Only processes with a negative ∆G are spontaneous •  Spontaneous processes can be harnessed to perform work Reaction coordinate diagram Free energy, G, is plotted as a function of the reaction progress (the reaction coordinate). The starting point for the forward or reverse reaction is call...
View Full Document

This note was uploaded on 11/05/2012 for the course BIOLOGY 1A taught by Professor Forte during the Spring '10 term at Berkeley.

Ask a homework question - tutors are online