Which statement is true about the concentration of the reactants and products in chemical equilibrium? 1.)There is more reactant than product over time
2.)They are constant over time
3.)There is more product than reactant over time
4.)They are become equal over time

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.