18. Aqueous Equilibrium
Intro to Buffers
18. Aqueous Equilibrium Intro to Buffers
20PRACTICE PROBLEM
A buffer solution with a pH of 7.20 needs to be prepared. If the following 0.20 M solutions are available in the laboratory: HF, NaF, HClO, CH3COOH, NaClO, CH3COONa. Choose a combination that would be best to use to prepare the buffer.
Ka HF = 6.8×10–4
Ka HClO = 3.0×10–8
Ka CH3COOH = 1.8×10–5
A buffer solution with a pH of 7.20 needs to be prepared. If the following 0.20 M solutions are available in the laboratory: HF, NaF, HClO, CH3COOH, NaClO, CH3COONa. Choose a combination that would be best to use to prepare the buffer.
Ka HF = 6.8×10–4
Ka HClO = 3.0×10–8
Ka CH3COOH = 1.8×10–5