Question:

Assuming equal concentrations of conjugate base and acid,

Last updated: 7/9/2022

Assuming equal concentrations of conjugate base and acid,

Assuming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum pH in the range of 9.1- 9.5? NaNO3/HNO3 KCN/HCN (Ka = 4.9 x10-10) CH3NH2/CH3NH3CI (Ka = 2.3 x 10-11) NaNO2/HNO2 (Ka = 4.6 x 10-4) NaOCN/HOCN (Ka = 2.0 x 10-4)