Thermodynamics Flashcards
A Chemical reaction for which the associated enthalpy change is positive…
may occur spontaneously if coupled to a reaction in which the enthalpy change is negative and of greater magnitude
A reaction for which the associated free energy change (G) is large and negative…
is likely to be irreversible in the cell
When is the free energy change (G) small?
If there is a small difference in ratio of products to reactants. A small change in conc of reactants/products can reverse G.
When is the free energy change (G) large?
If there is a large difference in ratio of products to reactants. Which means it is unlikely to reverse G.
What is an exergonic reaction and provide an example of strong one.
Where the change in free energy (G) is negative. For example, Hydrolysis of ATP.
How will a reaction behave if it has a large negative value for G
The reaction is likely to happen to a large extent, with large amounts of product formed as equilibrium lies towards the right.
