Roddilla
Oct 10, 2012, 08:51 AM
The enzyme aldolase catalyzes the conversion of fructose‐1,6‐
bisphosphate to dihydroxyacetone phosphate and glyceraldehyde‐3‐
phosphate. ΔG°’ for the reaction is +23.8 kJmol‐1, whereas ΔG in the cell
is ‐1.3 kJmol‐1. Calculate the ratio of products to reactants under
equilibrium and intracellular conditions. (7×10‐5; 3.7×10‐5)
I have this problem which I worked out and got the answer correct but on using the equation ΔG = ΔG° + RT ln Qp in order to find the ratio I found a problem. IF Q is the ratio of products and reactants at equilibrium then why is it that ΔG is not zero because we know that ΔG should be zero at equilibrium?
bisphosphate to dihydroxyacetone phosphate and glyceraldehyde‐3‐
phosphate. ΔG°’ for the reaction is +23.8 kJmol‐1, whereas ΔG in the cell
is ‐1.3 kJmol‐1. Calculate the ratio of products to reactants under
equilibrium and intracellular conditions. (7×10‐5; 3.7×10‐5)
I have this problem which I worked out and got the answer correct but on using the equation ΔG = ΔG° + RT ln Qp in order to find the ratio I found a problem. IF Q is the ratio of products and reactants at equilibrium then why is it that ΔG is not zero because we know that ΔG should be zero at equilibrium?