Given the reaction system;

2 NO (g) + O2 (g) -> 2 NO2 (g)

Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms.

(1)Increasing the concentration of NO (g)makes the reaction go faster.

(2)Increasing the concentration of O2(g) has no effect on the reaction rate.

(3)Raising the temperature of the reaction mixture greatly increases the reaction rate.

To understand the explanations for each of these statements in terms of the collision model and reaction mechanisms, let's break down the concepts:

(1) Increasing the concentration of NO (g) makes the reaction go faster:
The collision model states that for a chemical reaction to occur, the reactant particles must collide with enough energy and proper orientation. By increasing the concentration of NO (g), we increase the number of NO molecules in the reaction mixture. As a result, there will be more frequent collisions between NO molecules and O2 molecules. This increases the likelihood of successful collisions, leading to a faster reaction rate.

(2) Increasing the concentration of O2 (g) has no effect on the reaction rate:
In this reaction, O2 (g) is not involved in the rate-determining step or the slowest step of the reaction mechanism. Therefore, increasing the concentration of O2 (g) would not have a significant effect on the reaction rate. Even if its concentration increases, the rate of reaction is determined by the availability and collision frequency of NO (g) molecules.

(3) Raising the temperature of the reaction mixture greatly increases the reaction rate:
According to the collision model, increasing the temperature of a reaction increases the kinetic energy of the reactant particles. As the temperature rises, the particles move faster and collide more frequently, increasing the chances of successful collisions. Additionally, an increase in temperature also increases the average energy of collision, allowing more collisions to possess the activation energy required to initiate the reaction. Therefore, raising the temperature of the reaction mixture greatly increases the reaction rate by enhancing both the frequency and energy of collisions.