i nee help in this question any help would be appreciated the question is

1.Given the reaction:
A(g) + 2 B(g) ---> C(g) + D(g) ��H = -40 KJ,
a. If the activation energy in the forward direction is 80KJ, plot the PE
diagram.
b. Plot a KE distribution diagram in which about 10% of the molecules will
meet or exceed the activation energy

Thank you

Sure, I'd be happy to help you with this question. Let's break it down step by step.

Q1a. Plotting the PE Diagram:
To plot the Potential Energy (PE) diagram, we need to visualize the energy changes that occur during the course of the reaction. Here's how you can do it:

1. Draw a horizontal line representing the energy scale. This will be your x-axis.
2. Label the left side as the reactants (A and B) and the right side as the products (C and D).
3. Assign an arbitrary energy value to each species. For simplicity, you can start by assigning zero energy to the reactants A and B.
4. On the diagram, draw a line gradually increasing in energy from reactants (A and B) to products (C and D). The increase in energy represents the activation energy, which is 80 KJ in the forward direction.
5. You should end up with a peak in the middle of the diagram, which represents the activated complex or transition state.
6. Label the energy change (∆H = -40 KJ) below the reaction arrow, indicating that the overall reaction is exothermic.

Q1b. Plotting the KE Distribution Diagram:
To plot the Kinetic Energy (KE) distribution diagram, which shows the distribution of molecular speeds, follow these steps:

1. Draw a horizontal line representing the kinetic energy scale. This will be your x-axis.
2. Label the horizontal axis with a range of kinetic energy values.
3. Mark a vertical line representing the activation energy value (80 KJ) on the kinetic energy scale.
4. Draw a curve starting from zero energy on the kinetic energy scale and gradually increasing as you move away from zero.
5. The area under the curve represents the total number of molecules.
6. Highlight the portion of the curve that exceeds or meets the activation energy. In your case, it should account for about 10% of the molecules.
7. It's important to note that the KE distribution diagram is not symmetrical. The high-energy tail is longer than the low-energy tail, indicating that there are fewer molecules with high kinetic energy.

These diagrams will help you visualize the energy changes and the distribution of molecular speeds in the given reaction. You can refer to these diagrams to understand the reaction energetics and the role of activation energy in determining the reaction rate.