Question

How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.20? Assume no volume change.
Ka of HCOOH= 5.010^-4
The Henderson-Hasselbalch equation.

Related Questions

What mass of solid sodium formate (of MW 68.01)must be added to 125 mL of 0.48 mol/L formic acid (H... What mass of solid sodium formate (of MW 68.01) must be added to 130 mL of 0.63 mol/L formic acid...