Technically, everything reacts a little so we always have some products and some reactants. However, from a practical stand point, look at the K and how you write the expression.
Kc = (H2)^2(O2)/(H2O)^2
Kc = 4E-48. That's a VERRRRRRY small number. That means the numbers on top are small and the numbers on the bottom are large. That's the only way you can get a very small number. What does that tell you about the relations?
For the following reaction at equilibrium, indicate if the equilibrium mixture contains mostly products, mostly reactants, or both products and reactants.
2H20(g)-><-2H2(g)+O2(g) kc+4x10-48
2 answers
It tells us that there isn't much product but a lot of reactant. It is mostly reactants.
1 answer