Which of the following is true when comparing an uncatalyzed reaction to the same reaction with a catalyst?



The catalyst is a substance that can speed up the rate of reaction without undergoing a permanent chemical change (eternal), so that at the end of the reaction the substance can be recovered.
To understand more about catalyst understanding, consider the following hydrogen peroxide (H2O2) decomposition experiments:
2H2O2 (l) → 2H2O (l) + O2 (g)
A 5% H2O2 solution of 50 ml each was inserted into three glasses of chemistry.


Figure 8. H2O2 decomposition experiments

From the picture above, it can be seen that in tube I occurs decomposition H2O2 characterized by the emergence of little bubbles. In tube II H2O2 coupled with NaCl 0.1M, but does not affect the decomposition process of H2O2 because the bubbles arising remain small. While on the III tube coupled with FeCl3. When added with FeCl3 it appears that more and more bubbles and solution colors turn brown.
Based on the data and observations above can be concluded as follows:
1. The reagent which is the catalyst is ... FeCl3
2. The non-catalyst reagent is NaCl
3. No catalyst reaction takes place ......... fast
4. With the reaction catalyst progress ......... slow

Based on this experiment it can be concluded that the catalyst is a substance that can speed up a reaction without participating react

D.TEORI PUMPS
The collision theory describes the assembly of reactant particles as a collision. There are collisions that produce reactions and some do not produce reactions. The collisions that produce the reaction product particles are called effective collisions. Factors that determine effective collisions are the kinetic energy of particles (molecules) and the orientation or direction of the particles. Consider the reaction between the Nitrogen Oxide (NO) gas with the following ozone (O3): NO (g) + O3 (g) → NO2 (g) + O2 (g)

Based on the picture above, from the picture (a) it can be seen that the particle orientation between O and N is not precise so it does not produce effective collisions. While in the picture (b) the orientation of the particle is correct so as to produce effective collisions and will form the reaction product of NO2 and O2
Factors affecting reaction rates such as concentration, surface area, temperature and catalyst are related to collisions between particles. Why is that ? This can be explained as follows