Which of the following is best suited to dry crystals of ammine salts (complexes in which `NH_3` is a ligand e.g., `[Ni(NH_3)_6]Br_2)`

Question

Which of the following is best suited to dry crystals of ammine salts (complexes in which `NH_3` is a ligand e.g., `[Ni(NH_3)_6]Br_2)`

Which of the following is best suited to dry crystals of ammine salts (complexes in which `NH_3` is a ligand e.g., `[Ni(NH_3)_6]Br_2)`
A. Anhy. `CaCl_2`
B. Anhy. CaO
C. A mixture of CaO and `NH_4Cl`
D. None of these

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

A mixture of CaO and `NH_4Cl` is used to dry crystals of complexes containing `NH_3` as ligands. The water liberated by moist crystals is absorbed by CaO. This moisture helps in the chemical reaction between CaO and `NH_4Cl` to create an atmosphere of `NH_3`which prevents the decomposition of highly unstable complexes i.e., ammine salts.