You must choose a buffer to maintain pH when 0.15 mol of NaOH is added to 1.0 L of…
CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases
Problem
You must choose a buffer to maintain pH when 0.15 mol of NaOH is added to 1.0 L of solution.
• Buffer A: 0.40 M H₂CO₃ and 0.60 M HCO₃⁻
• Buffer B: 0.10 M H₂CO₃ and 0.90 M HCO₃⁻
Determine which buffer can completely neutralize the 0.15 mol of added OH⁻ without exhausting its acidic component. Show a brief calculation or statement supporting your choice.