1. The diagram below shows the distribution of energies of molecules in a gas a certain temperature.
(iii) Add a line showing the activation energy on the diagram and use it to help explain carefully how the diagram affords an explanation for the effect of increased temperature on a rate of reaction.
Vertical line on right hand side of the graph. All particles to the right hand side of the line have sufficient energy for reaction, and therefore collisions between them result in a reaction (they are successful). The higher temperature curve has a greater number of particles that have sufficient energy for reaction (to the right of the line), so the rate of reaction is greater at a higher temperature
