1. A 29.3 mL sample of 0.369 M
ethylamine,
C2H5NH2, is
titrated with 0.205 M hydrochloric
acid.
After adding 74.4 mL of hydrochloric
acid, the pH is:
2. A 26.4 mL sample of 0.296 M
diethylamine,
(C2H5)2NH, is
titrated with 0.206 M hydrobromic
acid.
After adding 15.2 mL of hydrobromic
acid, the pH is:
3. Calculate the pH and the equilibrium
concentrations of HCO3- and
CO32- in a
0.0510 M carbonic acid solution,
H2CO3 (aq).
For H2CO3, Ka1 =
4.2×10-7...