A buffer is prepared by dissolving 0.0250 mol sodium nitrite in 250 mL of 0.0410 M
nitrous acid. Assuming no volume change from dissolving, what is the pH of this buffer?
Its oops, not the way you spelled it bob. Jeez do the teachers know about this
*you're
Use the Henderson-Hasselbalch equation.
pH = pKa + log [(base)/(acid)
(acid) = 0.410 M nitrous acid
(base) = 0.0250 mols NaNO3/0.250 L = ?
pKa HNO2 = -log Ka HNO2
Post your work if you get stuck.
00ps. typo. That should be NaNO2 instead of NaNO3.
(acid) = 0.0410 M HNO2 and not 0.410.