@X@user.full_name@X@ @GMU: Calculate the [H3O+] of 119.11 mL…

@X@user.full_name@X@ @GMU: Calculate the [H3O+] of 119.11 mL of a buffer initially consisting of 0.1104 M C2H5NH2 and 0.1023 M C2H5NH3NO3 after addition of 0.0021 mol of HCl. Assume that no volume change occurs after addition of the acid. The Kb of C2H5NH2 is 5.60e-4