Question

1 mole of amino cobalt chloride on treating with an excess of $AgNO$${}_3$ solution gives $2$ moles of $AgCl$ precipitate. The number of $C{l}^{-}$ ions which satisfies both primary and secondary valency of cobalt in the complex is:

• A. $2$
• B. $3$
• C. $1$
• D. $0$

Answer 1

The correct option is C $1$

1 mole of amino cobalt chloride gives 2 moles of $AgCl$ so number of $C{l}^{-}$ ions which satisfies both primary and secondary valency of cobalt in the complex is 1.