## When to disregard -x in equilibrium formula?

Acidity $K_{a}$
Basicity $K_{b}$
The Conjugate Seesaw $K_{a}\times K_{b}=K_{w}$

Jennifer_Wong_1G
Posts: 10
Joined: Fri Jul 15, 2016 3:00 am

### When to disregard -x in equilibrium formula?

Under what circumstances can we disregard the subtracted "x" from the reactants in the equilibrium formula?

Alexandra Watts 3L
Posts: 14
Joined: Wed Sep 21, 2016 2:56 pm

### Re: When to disregard -x in equilibrium formula?

I think it's after you assume to disregard it and proceed to find out what "x" is. You then calculate it as a percentage of the initial M value. If it's less than 5% of the initial molarity then it's okay to disregard it. If not, use quadratic.

Jocelyn Sandoval 3B
Posts: 26
Joined: Wed Sep 21, 2016 2:59 pm

### Re: When to disregard -x in equilibrium formula?

I think that you can assume x=0 when your Kb,Kb, or Kc value is less than 10^-5?

Return to “Acidity & Basicity Constants and The Conjugate Seesaw”

### Who is online

Users browsing this forum: No registered users and 1 guest