The effect of temperature on the rate of the reaction between magnesium and hydrochloric acid can be explained using the collision theory. As the temperature increases, the kinetic energy of the particles magnesium and hydrochloric acid molecules also increases. This results in more frequent and energetic collisions between the reacting particles.When the temperature is higher, the reaction rate between magnesium and hydrochloric acid increases because the particles have more energy to overcome the activation energy barrier. This leads to a faster formation of products magnesium chloride and hydrogen gas .In summary, increasing the temperature will increase the rate of the reaction between magnesium and hydrochloric acid.