Chapter 17, Problem 61E

Using appropriate equilibrium constants but without doing detailed calculations, determine whether a solution can be simultaneously:

1. 0.10M ${\text{NH}}_{\text{2}}$ and 0.10M ${\text{NH}}_{\text{2}}$ Cl, with $\text{pH=6}\text{.07}$

0.10 M ${\text{NaCH}}_2$COO and 0.058 M Hl

0.10 M ${\text{KNO}}_{\text{2}}$ and 0.25 M ${\text{KNO}}_{\text{2}}$

0.050 M Ba ${\left(\text{OH}\right)}_{\text{2}}$ and 0.65 M ${\text{NH}}_{\text{4}}$ Cl

0.018 M ${\text{C}}_{\text{8}}{\text{H}}_{\text{8}}\text{COOH}$ and 0.018M ${\text{NaC}}_{\text{8}}{\text{H}}_{\text{8}}\text{COO}$ , with pH=4.20

0.68 M KCl, 0.42 M ${\text{KNO}}_{\text{2}}$ , 1.2 M NaCl, and 0.55 M ${\text{NaCH}}_{\text{2}}\text{COO}$ , with pH=6.4