Zero Order Reaction Example

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

Eunice Lee 1A
Posts: 60
Joined: Wed Oct 03, 2018 12:16 am

Zero Order Reaction Example

I don't really understand what a zero order reaction is. Can someone explain what it is and give an example of one?

kateminden
Posts: 63
Joined: Fri Sep 28, 2018 12:24 am

Re: Zero Order Reaction Example

A zero order reaction is a reaction in which the rate is independent of the concentration of reactants. This means that the rate law of a zero order reaction is rate = k. I believe the reaction 2NH3 (g) --> N2 (g) + 3H2 (g) is a zero order reaction because the rate does not depend on the concentration of ammonia.

lukezhang2C
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: Zero Order Reaction Example

A zero order reaction is one where changing the concentration of your reactants does not change the initial rate of the reaction, meaning that your reaction rate is independant of that reactant. Zero order reaction K values will have M/s units.

Sofia Barker 2C
Posts: 101
Joined: Wed Sep 18, 2019 12:21 am

Re: Zero Order Reaction Example

Zero order reactions are reactions in which the rate of the reaction only depends on the rate constant, not the concentration of reactant. The book gives an example, which is the reaction 2 NH3(g) --> N2(g) + 3 H2(g). Experiments show that no matter the initial concentration of NH3, the reaction always proceeds at the same rate.

Orrin Zhong 4G
Posts: 51
Joined: Sat Jul 20, 2019 12:16 am

Re: Zero Order Reaction Example

Professor Lavelle gave an example of zero order reactions as a saturated catalyst reaction, therefore the rate of reaction is no longer dependent on the concentration of the reactants but rather on the speed at which catalysts can interact with the reactants.

805394719
Posts: 104
Joined: Wed Sep 11, 2019 12:16 am

Re: Zero Order Reaction Example

A zeroth-order reaction has a rate that does not depend on the concentration of the reactant. This is commonly observed in enzyme-catalyzed reactions when the enzyme is saturated with the substrate and increasing the substrate has no effect on the rate of the reaction since there are no more enzymes to bind to the substrates. Therefore, the rate of the reaction is constant.

Nathan Rothschild_2D
Posts: 131
Joined: Fri Aug 02, 2019 12:15 am

Re: Zero Order Reaction Example

What page can you find the example of a zero order reaction in the book?