Consider the complex ion (Pt(NH_3)_4Cl_2]^+2. Identify the Lewis acid(s). Identi
ID: 969139 • Letter: C
Question
Consider the complex ion (Pt(NH_3)_4Cl_2]^+2. Identify the Lewis acid(s). Identify the Lewis base(s). What is the charge on the central metal ion? What is the coordination number? Consider the analysis of the copper content in this experiment. If the covets used in the spectrophotometer were rinsed with distilled water, but not dried or conditioned (lined) before use, would the calculated number of moles of copper per gram of complex be too high, too low, or unaffected? Briefly explain. Consider the analysis of the ammonia content in this experiment. If the beret used in the titration was rinsed with distilled water, but not dried or conditioned before use, would the calculated number of moles of ammonia per gram of complex be too high, too low, or unaffected? Briefly Explain. If the titration flask was rinsed with distilled water but not dried before use, would the calculated number of moles of ammonia per gram of complex be too high, too low. or unaffected? Briefly Explain.Explanation / Answer
The lewis is acid is the Pt, since it is accepting electrons from the ligands.
The lewis bases are NH3 and Cl-, both are giving electrons
The charge is +4, and you adding 2 Cl-, that is the reason why the complex is +2
Coordination number is 6, it has 6 ligands attached
2)
If you do not dry a cuvette, you are going to dilute your sample with the remaining water in the cuvette, thus the reading of the concentration is going to be lower.
3)
If you do not dry the buret, you are going to dilute the titrant solution with the remainig water, thus if you will need more solution in the tiitration, and the concentration that you are looking for is going to be higher.
If you do not dry the flask it does not matter, beacause you are adding a known volume into flask, hence you know the moles you are titrating.