## Catalyst

$\frac{d[R]}{dt}=-k; [R]=-kt + [R]_{0}; t_{\frac{1}{2}}=\frac{[R]_{0}}{2k}$

haileyramsey-1c
Posts: 105
Joined: Thu Jul 25, 2019 12:18 am

### Catalyst

Can a zero order reaction have a catalyst or be influenced by one? If so would k just depend on the amount of catalyst?

Brian Tangsombatvisit 1C
Posts: 119
Joined: Sat Aug 17, 2019 12:15 am

### Re: Catalyst

A zero order reaction's rate is independent of the concentration of R, often when the catalyst or enzyme is saturated and increasing the concentration of R does not increase the overall rate. Since the rate is dependent solely on k, the presence of a catalyst would increase the reaction rate since it lowers the activation energy of a reaction. I am not sure whether the amount of catalyst matters.

805307623
Posts: 99
Joined: Fri Aug 09, 2019 12:17 am

### Re: Catalyst

Increasing the concentration of the reactant in a zero-order reaction will not speed up the rate of the reaction.
Zero-order reactions are typically found when a catalyst, is saturated by the reactants.

Miriam Villarreal 1J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

### Re: Catalyst

saturating the amount of substrate with catalyst does not speed up the rate of the reaction

Samuel Tzeng 1B
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

### Re: Catalyst

No a zero order reaction won't be influenced by a catalyst