When aqueous sodium thiosulfate reacts with hydrochloric acid, the reaction rate rises if the concentration of each reactant is increased. When nitrogen gas reacts with hydrogen gas, the reaction rate rises if the pressure inside the reaction vessel is increased. Which row correctly states why the stated change makes the reaction rate increase?
- Ahigher frequency of collisions between particles; higher frequency of collisions between particles
- Bhigher frequency of collisions between particles; the activation energy is decreased
- Cthe activation energy is decreased; higher frequency of collisions between particles
- Dthe activation energy is decreased; the activation energy is decreased