Question

What is the difference between ∆rG and ∆rG(knot)?

Answer 1

∆rGo is the free energy at standard conditions . that means at 25oC temperature and fixed concentration of reactants exactly at equilibrium

∆rGo   = - RT ln Keq

here T = 298 K

Keq = equilibrium constant. it is equal to product of the concentration of products divide by reactants at equilibrium

∆rG   is the free energy at any temperature and any concentration of reactants and pressure

∆rG   = ∆rGo + R T ln Q

Q is the reaction quotient. it is the concentration of products divide by concentration of reactants at any concentration

T = any temperature