Question:
When $AgNO _{3}$ solution is added in excess to $1\, M$ solution of $CoCl _{3} \cdot x NH _{3}$, one mole of $AgCl$ is formed. What is the value of $x$ ?
When $AgNO _{3}$ solution is added in excess to $1\, M$ solution of $CoCl _{3} \cdot x NH _{3}$, one mole of $AgCl$ is formed. What is the value of $x$ ?
Updated On: May 13, 2024
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The Correct Option is D
Solution and Explanation
When $AgNO _{3}$ is added to $CoCl _{3} \cdot x NH _{3}$ one mole of $AgCl$ is formed hence, the value of $x$ is 4
${\left[ Co \left( NH _{3}\right)_{4} Cl _{2}\right] Cl \rightleftharpoons\left[ Co \left( NH _{3}\right)_{4} Cl _{2}\right]^{+}}$
$+\underset{\text{can be precipitated}}{Cl ^{-}}$
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Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.