1) Rate of reaction. This is the speed at which a chemical reaction takes place.
1.1- Increasing the temperature.
This action will increase the kinetic energy. This means molecules will move faster. So, they can collide more often.
1.2- Increasing the concentration of the reactants.
This action will increase the number of molecules in the solution. Therefore, it will be a greater number of molecules to react to.
1.3- Adding an appropriate catalyst.
The catalyst can provide a different way for the reaction to occur. The new way has lower activation energy. So, the reaction can occur more easily.
According to the information above, the three actions will increase the rate of the reaction.
The correct answer is 4. all of the above.
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