## pseudo rate law

Karina Kong 2H
Posts: 98
Joined: Thu Jul 25, 2019 12:16 am

### pseudo rate law

Could someone explain what a pseudo rate law is?

TarynD_1I
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

### Re: pseudo rate law

I believe that the pseudo rate law is essentially increasing all but one of the reactant concentrations, making them basically constant. This makes small changes in the small concentration significant by isolating it.

Jiyoon_Hwang_2I
Posts: 101
Joined: Sat Sep 14, 2019 12:17 am

### Re: pseudo rate law

In a pseudo rate law you assume that the other reactants are in large excess and you measure the isolated reactant

VPatankar_2L
Posts: 104
Joined: Thu Jul 25, 2019 12:17 am
Been upvoted: 1 time

### Re: pseudo rate law

For the pseudo rate law, you would write the rate law in terms of the reactant that is in excess. Thus, you would substitute k' for k[reactant that is maintained at its original concentration]. For example in the reaction A + B --> C, and B's concentration were increased so that it would be in excess, rate= k'[A] where k'=k[B].