18. Aqueous Equilibrium

Which component of the acetic acid buffer pair would react with added NaOH?

A buffer solution is prepared by adding 9.04 mL of 1.27 M HBr to 190.0 mL of 0.11 M methylamine solution. The buffer is allowed time to establish. Then, 0.005 mol of a strong base is added. What is the pH of the resulting solution? Round your answer to 2 decimal places.

Which component of the acetic acid buffer pair would react with added HCl?

Suppose you are performing an experiment that requires a constant pH of 4.75. Which of the following buffer systems would be most appropriate based on the given Ka values?

Calculate the pH value for a buffer solution prepared by adding 1.0 mL of a 0.10M acetic acid solution to 20 mL of a 0.10M sodium acetate solution. (Ka = 1.7 × 10⁻⁵)

Which of the following solutions is a good buffer system?

What mass of NaC₂H₃O₂ (molar mass = 82.03 g/mol) would need to be added to 0.450 moles of HC₂H₃O₂ to prepare a 1.0 L buffer with a pH = 4.95. K_a for HC₂H₃O₂ = 1.8 × 10⁻⁵.