Question

Which of the following complexes will consume more equivalents of aqueous solution of \[Ag\left( N{{O}_{3}} \right)\]?
A. \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{5}}Cl \right]C{{l}_{2}}\]
B. \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]C{{l}_{3}}\]
C. \[N{{a}_{3}}\left[ CrC{{l}_{6}} \right]\]
D. \[N{{a}_{2}}\left[ CrC{{l}_{5}}\left( {{H}_{2}}O \right) \right]\]

Answer 1

Hint: When a solution of silver nitrate is added to a solution of sodium chloride, the silver ions combine with the chloride ions to form a precipitate of silver chloride. The sodium and the nitrate ions are nonparticipating spectator ions. ... Like all equations, net ionic equations must be balanced.

Complete step by step answer:
The long-standing test for salt tainting (chloride particles) has customarily been the "silver nitrate test", where a smooth white reaction is characteristic of chloride particles. ... (I) if the test is completed accurately it is a satisfactory strategy for identifying the presence of chloride particles.
More equivalents of\[Ag\left( N{{O}_{3}} \right)\] aqueous solution will be consumed if complex will furnish more \[C{{l}^{-}}\]ions in solution. Hence complex \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]C{{l}_{3}}\]will consume more equivalents of aqueous solution of \[Ag\left( N{{O}_{3}} \right)\].

Hence, the correct option is B. \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]C{{l}_{3}}\].

Additional Information:
Applied to the skin and mucous membranes, silver nitrate is handed down either in stake semblance as lunar caustic or in solutions of 0.01 percent to 10 percent silver nitrate in water. The stick is used for removing warts and granulation tissue and for sanitizing wounds and ulcerations.
Silver nitrate is used as a caustic, antiseptic, and astringent agent. The silver ion is precipitated by the chloride in tissue fluids, so that it does not readily penetrate.

Note:
Hydrate or solvate isomerism: where water is involved as a solvent. This is similar to ionisation isomerism. Solvate isomers differ by whether or not a solvent molecule is directly bonded to the metal ion or merely present as free solvent molecules in the crystal lattice. For example aqua complex \[\left[ Cr{{\left( {{H}_{2}}O \right)}_{6}} \right]C{{l}_{3}}\] (violet).