Convention of the Negative Sign  [ENDORSED]


Moderators: Chem_Mod, Chem_Admin

Magdalena Palavecino 1A
Posts: 54
Joined: Fri Sep 29, 2017 6:04 am

Convention of the Negative Sign

Postby Magdalena Palavecino 1A » Thu Feb 22, 2018 3:30 pm

I understand why in class we were told that since the concentration of the reactants decreases, then a negative sign is placed in front of the equation so that the resulting answer is positive. However, why not keep it in order to have it be an indicator that the species is in fact a reactant? If the rate were kept negative then we would immediately identify that its concentration would be decreasing over time.

Chem_Mod
Posts: 16489
Joined: Thu Aug 04, 2011 12:53 pm
Has upvoted: 349 times

Re: Convention of the Negative Sign  [ENDORSED]

Postby Chem_Mod » Thu Feb 22, 2018 5:03 pm

Then one would not be able to write equations relating change in reactant concentration to change in product concentration.

As I discussed in class the equality sign would not be valid as the reactant side would have a negative value and the product side of the equation a positive value.


Return to “General Rate Laws”

Who is online

Users browsing this forum: No registered users and 1 guest