Timeline for Can rate constant depend upon the concentration of reactants (or other species involved in the reaction)?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 12, 2021 at 18:00 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 13, 2021 at 18:03 | comment | added | Martin - マーチン♦ | That is an entirely different question, and I am not equipped to answer it. Sorry. | |
| May 13, 2021 at 18:01 | comment | added | S R Maiti | @Martin-マーチン Sorry, I don't understand what you wrote, could you please explain what you mean? I understand that TST does not work in this case, but I am asking about the rate constant (k) as defined by the rate law (which can be calculated under all conditions). Does the value of k stay the same as it was when the concentrations of the reactants were low? | |
| May 13, 2021 at 17:57 | comment | added | Martin - マーチン♦ | If with "change" you mean it was once that and became that, then: no. If with "change" you mean it is completely different and has absolutely no relationship with anything else, then: yes. That includes the cases, where that rate appears to be equal. I think I need to stress that again: TST only ever works for a single, well defined potential hyper surface. | |
| May 13, 2021 at 17:51 | comment | added | S R Maiti | @Martin-マーチン Thank you. So what happens to the rate constant then? It changes, right? | |
| May 13, 2021 at 17:40 | comment | added | Martin - マーチン♦ | TST is a crude approximation. It works only for elementary steps, only for the defined potential hyper surface. If you change the concentrations, you change the surface, the approximation breaks. P.S.: Please don't use mhchem for non-chemistry items. | |
| May 13, 2021 at 17:18 | history | edited | Martin - マーチン♦ | CC BY-SA 4.0 |
corrected formatting
|
| May 13, 2021 at 17:06 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Dec 2, 2020 at 22:46 | answer | added | Buttonwood | timeline score: 2 | |
| Dec 2, 2020 at 22:09 | comment | added | S R Maiti | Then how would you define rate constant where the rate determining step can change if the concentration of one component is changed to a large extent? | |
| Dec 2, 2020 at 22:04 | comment | added | Maurice | If the rate constant depends on the concentration of something, it is not a rate constant. | |
| Dec 2, 2020 at 21:51 | history | asked | S R Maiti | CC BY-SA 4.0 |