MF015 59 What is the acid dissociation constant for HA if pH = 2.74? [HA] = 0.020M?
MF12063: What is the minimum energy barrier that musts be overcome for a chemical reaction to occur?
is it the activation energy?
yes
To find the acid dissociation constant (Ka) for HA, you need to use the equation:
Ka = [H+][A-] / [HA]
Given that the pH is 2.74, we know that [H+] = 10^(-pH). Therefore, [H+] = 10^(-2.74).
Given that [HA] = 0.020 M, we can substitute these values into the equation to solve for Ka:
Ka = ([H+][A-]) / [HA]
= (10^(-2.74) * [A-]) / 0.020
Since we don't have the concentration of [A-], we need some more information in order to calculate Ka.