Table of Contents
- 1 Why does a reverse reaction start at zero?
- 2 What is the rate constant for the reverse reaction?
- 3 Is the rate of the forward or reverse reaction faster?
- 4 When the rate of the forward reaction is equal to the rate of the reverse reaction the system?
- 5 What is a zero order reaction?
- 6 Why are the forward and reverse reaction rates not equal?
- 7 Can a reaction be 99\% reactants and 1\% products?
Why does a reverse reaction start at zero?
Well, when time is equal to zero, the rate of the reverse reaction is zero. And that’s because when we start out, we have only X2, we don’t have any X present. So the reverse reaction doesn’t happen.
Is the initial rate of the reverse reaction zero?
the rate of the forward reaction and the rate of the reverse reaction are equal to zero. the rate of the forward reaction is zero.
What is the rate constant for the reverse reaction?
Consequently, the equilibrium constant for the reverse reaction, the decomposition of water to form O2 and H2, is very small: K′=1/K=1/(2.4×1047)=4.2×10−48.
Is the rate constant the same for the reverse reaction?
All reactions tend towards a state of chemical equilibrium, the point at which both the forward process and the reverse process are taking place at the same rate. Since the forward and reverse rates are equal, the concentrations of the reactants and products are constant at equilibrium.
Is the rate of the forward or reverse reaction faster?
When molecules first begin to react, they rate of the forward reaction is faster than the reverse reaction. As reactants are consumed and products accumulate, the rate of the forward reaction decreases and the rate of the reverse reaction increases.
When the rates of the forward and reverse reactions are equal?
In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.
When the rate of the forward reaction is equal to the rate of the reverse reaction the system?
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.
What happens to the rate of the reverse reaction as the products are produced?
As the products are formed, their concentration will increase and they start colliding to form the reactants. The rate of the reverse reaction will increase. Both reactions will proceed at the same time but at different rates. Eventually, the rate of the forward reaction will equal the rate of the reverse reaction.
What is a zero order reaction?
Definition of zero-order reaction : a chemical reaction in which the rate of reaction is constant and independent of the concentration of the reacting substances — compare order of a reaction.
When the rate of the forward reaction is equal to the rate of the reverse reaction?
Why are the forward and reverse reaction rates not equal?
The forward and backward rates are only equal to eachother if there are equal amounts of products and reactants which is not always the case. A reaction can be 99\% reactants, 1\% products and be in equilibrium as long as those concentrations are not changing, and in that case the forward and reverse reaction rates are not equal.
Why are the rates of chemical reactions zero at equilibrium?
At equilibrium, the concentrations do not change with time. So, is it true that the rates of the chemical reactions are zero at equilibrium? Wikipedia says that they are not zero. Why is this? In equilibrium, the forward and backward rates are equal to each other. The net is zero, but the individual rates are not zero.
Can a reaction be 99\% reactants and 1\% products?
A reaction can be 99\% reactants, 1\% products and be in equilibrium as long as those concentrations are not changing, and in that case the forward and reverse reaction rates are not equal.
What happens to the rate of dissociation in equilibrium?
In equilibrium, the forward and backward rates are equal to each other. The net is zero, but the individual rates are not zero. Consider something as simple as water — we know that the water molecule can dissociate in to an O H X − and H X +, and the pH is a direct measure of the amount of H X +.