Are forward and reverse rates equal?
Since the forward and reverse rates are equal, the concentrations of the reactants and products are constant at equilibrium. It is important to remember that even though the concentrations are constant at equilibrium, the reaction is still happening!
When the rates of the forward and reverse reactions are equal then?
At equilibrium: The rate of the forward reaction is equal to the rate of the reverse reaction. No further changes occur in the concentrations of reactants and products, even though the two reactions continue at equal but opposite rates.
Why should rates of forward and reverse reactions become equal in equilibrium?
When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. (b) Changes in concentration over time as the decomposition reaction achieves equilibrium.
When the rate of the forward reaction is equal to the rate of backward reaction then the concentrations of reactants and products are equal?
Chemical equilibrium
Chemical equilibrium is the state of a system in which the rate of the forward reaction is equal to the rate of the reverse reaction. Figure 8.2.
Why equilibrium constant has no unit?
Strictly speaking, equilibrium expressions do not have units because the concentration or pressure terms that go into them are really ratios having the forms (n mol L–1)/(1 mol L–1) or (n atm)/(1 atm) in which the unit quantity in the denominator refers to the standard state of the substance; thus the units always …
What is the value of Kc for the reverse reaction?
The equilibrium expression written for a reaction written in the reverse direction is the reciprocal of the one for the forward reaction. K’ is the constant for the reverse reaction and K is that of the forward reaction. N2O4(g) at 100o C?…
| Equation | Equilibrium Constant |
|---|---|
| N2(g) + O2(g) NO2(g) | Kc = 4.1 x 10-9 |
What is the difference between forward and reverse reactions?
the forward reaction is the one that goes to the right. the backward reaction is the one that goes to the left.
Is the forward or reverse reaction faster at equilibrium?
If the concentrations of the reactants are too large for the reaction to be at equilibrium, the rate of the forward reaction will be faster than the reverse reaction, and some of the reactants will be converted into products until equilibrium is achieved.
What is the difference between a forward and a reverse reaction?
What is a forward reaction versus a reverse reaction?
What is a forward reaction versus a reverse reaction? In a forward reaction, the reactants collide to produce products and it goes from left to right. In a reverse reaction, the products collide to produce reactants and it goes form right to left.
What factors can affect equilibrium?
Changes in concentration, temperature, and pressure can affect the position of equilibrium of a reversible reaction. Chemical reactions are equilibrium reactions. Equilibrium occurs when a certain proportion of a mixture exists as reactants and the rest exits as products.
What is the rate of a reverse reaction?
The rate of the forward reaction is equal to a rate constant for this reaction, kf, times the concentrations of the reactants, ClNO2 and NO. Rateforward = kf(ClNO2)(NO) The rate of the reverse reaction is equal to a second rate constant, kr, times the concentrations of the products, NO2 and ClNO.
What is the rate of a forward reaction?
The rate of the forward reaction is equal to a rate constant for this reaction, kf, times the concentrations of the reactants, ClNO2and NO. Rateforward= kf(ClNO2)(NO)
Is the equilibrium constant equal to the forward rate constant?
Thus, the equilibrium constant for a one-step reaction is equal to the forward rate constant divided by the reverse rate constant. Practice Problem 7: The rate constants for the forward and reverse reactions in the following equilibrium have been measured.
How are equilibrium constants related to reversible reactions?
There is a simple relationship between the equilibrium constant for a reversible reaction and the rate constants for the forward and reverse reactions if the mechanism for the reaction involves only a single step. To understand this relationship, let’s turn once more to a reversible reaction that we know occurs by a one-step mechanism.
