In: Chemistry
Carbonic acid (H2CO3) is a diprotic weak acid that undergoes the
following dissociation reactions:
H2CO3 ⇌ H+ + HCO3− Ka1 = 4.3 x 10−7
HCO3− ⇌ H+ + CO32− Ka2 = 5.6 x 10−11
For a 0.020 M solution of carbonic acid in water, which of the
following is true?
[HCO3−] = [CO32−] |
[H+] = Ka1 |
[CO32−] = Ka2 |
Ka1 = Ka2 |
[H+] = Ka2 |