Interpretation: The structure of three salts formed needs to be determined if 0.27 g of octahedral complex of Cr reacts with strong dehydrating agent and lost mass of 0.036 g. Reaction of 270 mg of second salt with same dehydrating agent show mass loss of 18 mg. The 3rd salt did not lose any mass while treating with dehydrating agent.
Given:
Concept Introduction:
Crystal field theory is the theory given to explain the bonding in the coordination complexes. As ligand approaches towards the metal ion, the d-orbital of metal ion divide according to the energy of metal ion. On the basis of energy and degeneracy, the d-orbital can be classified as
In octahedral complex, the
Answer to Problem 84AE
Explanation of Solution
Given information:
Addition of excess of aqueous silver nitrate to 100.0 mL portion of 0.100 M solution of each salt forms silver chloride,
- 1st solution= 1430 mg AgCl
- 2nd solution = 2870 mg AgCl
- 3rd solution = 4300 mg AgCl
Two salts are green and one is violet here.
Compound 1:
Calculate moles of water of hydration:
With 2 moles of water; the formula must be
Mass of AgCl = 1430 mg
Check the mass of Cl in
Calculate moles of water of hydration:
With 1 moles of water; the formula must be
Mass of AgCl = 2870 mg
Check the mass of Cl in
Compound 3:
Moles of water of hydration is 0 as no water lose is there. Thus the formula must be
Mass of AgCl = 4300 mg
Check the mass of Cl in
Hence the structure of complexes should be:
Thus,
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Chapter 19 Solutions
Chemical Principles
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