Homework SourseFind the Ka and then pKa for the acid of a solution HCO3 CO
Find the Ka and then pKa for the acid of a solution: HCO3- + CO3^2-
pH = 9.93
[H3O+] = 2.24 X 10^-10
Solution
Ka = [H+][A-] /[HA]
pH = 9.93
Note that [H+] = [A-] i.e [H3O+] = 2.24 X 10^-10
because conc of HA not give so
calculate the mass of HA the you must know the concentration (moles/liter) of HA
then put in equation to get Ka
pKa=-log Ka
Put to get the results
![Find the Ka and then pKa for the acid of a solution: HCO3- + CO3^2- pH = 9.93 [H3O+] = 2.24 X 10^-10Solution Ka = [H+][A-] /[HA] pH = 9.93 Note that [H+] = [A-]](/WebImages/43/find-the-ka-and-then-pka-for-the-acid-of-a-solution-hco3-co-1135004-1761607288-0.webp "Find the Ka and then pKa for the acid of a solution: HCO3- + CO3^2- pH = 9.93 [H3O+] = 2.24 X 10^-10Solution Ka = [H+][A-] /[HA] pH = 9.93 Note that [H+] = [A-]")
