A) \[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]
B) \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]
C) \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\]
D) \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]
Correct Answer: A
Solution :
(a) \[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\rightleftharpoons {{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}+3C{{l}^{-}}\] \[3C{{l}^{-}}+3AgN{{O}_{3}}\xrightarrow{{}}3AgCl+3NO_{3}^{-}\] (b) \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\rightleftharpoons {{[Co{{(N{{H}_{3}})}_{5}}Cl]}^{2+}}+2C{{l}^{-}}\] \[2C{{l}^{-}}+2AgN{{O}_{3}}\xrightarrow{{}}2AgCl+2NO_{3}^{-}\] [c] \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\rightleftharpoons {{[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]}^{+}}+C{{l}^{-}}\] \[C{{l}^{-}}+AgN{{O}_{3}}\xrightarrow{{}}AgCl+NO_{3}^{-}\] (d) \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]-\]- It doesn't ionises
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