## Zero Order Reaction

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

Emma Scholes 1L
Posts: 62
Joined: Fri Sep 28, 2018 12:18 am

### Zero Order Reaction

What is an example of a zero order reaction?

Cole Elsner 2J
Posts: 88
Joined: Fri Sep 28, 2018 12:25 am

### Re: Zero Order Reaction

An example I like to think of is having to reactants, A and B, and a few different experiments changing the concentrations of each, and analyzing the change in the rate. When A is increased, let's say that the reaction shows no change. You do the same for B, still no change. I think of zero order as any increase or decrease of the reactant with zero order, there is ZERO change to rate.

mcredi
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

### Re: Zero Order Reaction

For example 10mg of a drug maybe eliminated per hour, this rate of elimination is constant and is independent of the total drug concentration in the plasma

caseygilles 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

### Re: Zero Order Reaction

a zero order reaction is one whose rate is independent of the concentration. An example is when nitrous oxide decomposes to nitrogen and oxygen. In the presence of a catalyst, platinum, we see that changing concentration of N2O has no effect on the rate of decomposition so we know the rate only depends on the rate constant, k. More precisely, as long as there is sufficient n2o to react with platinum the rate is not determined by concentration of n2o.

Brian Chang 2H
Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

### Re: Zero Order Reaction

The Haber process is an example of a 0th order rxn.

Kyither Min 2K
Posts: 60
Joined: Wed Oct 03, 2018 12:15 am

### Re: Zero Order Reaction

I think this was mentioned in class but zero order reactions occur when the concenctration is super high that there is barely a difference in concentration respect to time.