catcrazy415 catcrazy415 12-10-2022 Chemistry contestada A buffer solution with a pH of 4.23 is prepared with the same volumes of 0.90 M HC₂H₂O₂ and . O 1.2x10-9 M NaC₂H₂O₂. The K₂ of HC₂H₂O₂ is 1.8 - 105.