The acid dissociation constant Flashcards
1
Q
When do you use the acid dissociation constant?
A
When working with weak acids
2
Q
What is the acid dissociation constant?
A
Ka = [H+] [A-] / [HA]
3
Q
What equations do you use to calculate the pH of weak acids?
A
[H+]²= Ka x [HA]
Then square root the answer to get [H+]
Then put [H+} into -log[H+}
4
Q
What equation do you use to calculate the concentration of weak acids?
A
[HA] =[H+]² / Ka
5
Q
What equation do you use to calculate the Ka?
A
Ka =[H+]² / [HA]
6
Q
How do you work out pKa?
A
pKa = -log (Ka)
7
Q
How do you calculate Ka from pKa?
A
Ka = 10⁻ᵖᴷᵃ
