Different Variables Changing the Rate of Reaction

Different variables that change the reaction rate indicate that different variables can change the reaction rate, eg, make them faster or slower. Theory: - Reaction rate increases and decreases with changing reaction concentration, temperature and surface area. This is because when the concentration of the solution is changed to a higher concentration, the reaction rate increases because more particles are present in the solution, which means that the particles collide more.

The theory used to explain how various variables change the reaction rate is called collision theory. In order to react, the particles of the reaction mass must collide. Only a small percentage of collisions cause chemical changes, and these are called "successful collisions". Successful collisions yield enough energy (activation energy - Ea) to break existing bonds and form new bonds and produce reaction products. For example, variable heat gives energy to the particles, which increases the likelihood that the particles will collide with each other.

essay.com/G.C.S.E Chemical reaction - reaction rate of sodium thiosulfate solution and hydrochloric acid

G.C.S.E Chemical reaction - reaction rate of sodium thiosulfate solution with hydrochloric acid

In order to form a reaction, the particles must collide at high speed. The faster the particles collide, the more kinetic energy is generated. This will produce a greater response. Five important variables influencing the reaction rate (in this case solids and solution): The increase in thermal energy within the temperature change particles results in more kinetic energy. Therefore, the particle collision is more, and it increases the reaction rate. Decreasing the amount of heat obviously slows down the reaction. For example, putting food in a refrigerator or freezer slows down the food corruption process.