Consider the following three complex ions of Ag+ and their formation constants, Kf.
Ag(NH3)2+ Kf = 1.7 × 107
Ag(CN)2– Kf = 5.6 × 1018
AgBr2– Kf = 1.0 × 1011
Which of the following responses are true?
1. Ag(NH3)2+ is more stable than Ag(CN)2–.
2. Adding a strong acid (HNO3) to a solution that is 0.010 M in Ag(NH3)2+ would tend to dissociate the complex ion.
3. Adding a strong acid (HNO3) to a solution that is 0.010 M in AgBr2– would tend to dissociate the complex ion.
4. To dissolve AgI add either NaCN or HCN, fewer moles of NaCN would be required.
◦
1 and 2◦
1 and 3◦
1 and 4◦
2 and 4◦
2 and 3