Which of the following aqueous mixtures would make a good buffer system?
1) 50.0 mL of 0.11 M KOH and 50.0 mL of 0.29 M KCICa
2) 100.0 mL of 0.36 M NaBr and 100.0 mL of 0.29 M KBrO
3) 100.0 mL of 0.3