Calculate the percent ionization of formic acid (HCO₂H)in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO₂). The K_a of formic acid is 1.77 × 10^-4. A)37.8 B)0.0937 C)11.3 D)1.06 × 10^-3 E)3.529

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Quizplus · Accepted Answer

The percent ionization can be calculated using the formula: % ionization = ( [H⁺]/[HA] ) × 100. Using the Henderson-Hasselbalch equation, pH = pKa + log([A⁻]/[HA]), we find the pH and then [H⁺]. The percent ionization is then calculated using the initial concentration of formic acid.

Calculate the Percent Ionization of Formic Acid (HCO2H)in a Solution

Calculate the Percent Ionization of Formic Acid (HCO₂H)in a Solution