. Calculate the pH of a buffer that is 0.020 M in NH3 and 0.030 M in NH4Cl. What is the pH after adding 1.00 mL of 0.01 M NaOH to 0.10 L of this buffer? [Ka for NH4+ if 5.70 x 10-10]
Added by Antonio F.
Step 1
The Henderson-Hasselbalch equation is pH = pKa + log([A-]/[HA]), where [A-] is the concentration of the base (NH3) and [HA] is the concentration of the acid (NH4+). First, we need to find the pKa from the given Ka. pKa = -log(Ka) = -log(5.70 x 10^-10) = Show more…
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