Using kinetic molecular theory and collision theory, explain why the absolute temperature scale (kelvins) is more appropriate than celsius for explaining the effect of temperature on reaction rate

The kinetic theory of gases states that the total average energy of the movement (translation) of a molecule is directly proportional to the absolute temperature of the gas. Then, as the temperature increases, the number of collisions increases, since the higher the temperature, the greater the number of collisions.

Therefore, the reaction rate will increase as the temperature increases.

In other words :

If a reaction suffers an increase in temperature or concentration, it will generate an increase in the number of effective collisions.

In this context, a change in temperature in the Kelvin scale is directly related to kinetic energy of the molecules, hence the 0 degrees Kelvin represents zero kinetic energy; while the Celsius scale is indirectly related kinetic energy, it is based on the range between freezing and boiling water temperatures in 100 equal parts, this means the zero degrees Celsius is based on the change in temperature in water and is not the absolute zero.