The rate of a reaction

[Hector Acosta Discussion 1H]

Do other things play a role in how fast a reaction takes place or is it all dependent on kinetics?

[miznaakbar]

Yes, rates of reactions is all dependent on kinetics, which includes the nature of the reactants, the temperature, the presence of a catalyst, and concentration. Thermodynamics is what we use to see whether or not reactions are favorable, not their speed.

[kaushalrao2H]

in general, remember that the rate constant k is dependent on temperature and the activation energy of the reaction.

[Kathleen Vidanes 1E]

in general, remember that the rate constant k is dependent on temperature and the activation energy of the reaction.

Can someone please explain why that is?

[Julianna Thrasher 1B]

K is dependent on temperature because the molecules in the substances in the given reactions will change due to the change in temperature. A higher temperature will cause molecules to vibrate more and move more rapidly, which could then increase or decrease the rate of the reaction, thus the value of K, depending if the reaction is endothermic or exothermic.
This kind of explains why activation energy is also important in determining K. The molecules need to possess a certain amount of energy (activation energy) in order to collide with each other to cause a reaction to occur.

[Ya Gao]

Yes! I think in class, it is put as rate of constant k depends of temperature and activation energy.