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One mole of the complex compound Co(NH_{3})_{5}Cl_{3}, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO_{3} solution to yield two moles of AgCl\, (s). The structure of the complex is

Option: 1

\left [ Co(NH_{3})_{5}Cl \right ]Cl_{2}


Option: 2

\left [ Co(NH_{3})_{3}Cl_{2} \right ]\cdot 2NH_{3}


Option: 3

\left [ Co(NH_{3})_{4}Cl_{2} \right ]Cl\cdot NH_{3}


Option: 4

\left [ Co(NH_{3})_{4}Cl \right ]Cl_{2}\cdot NH_{3}


Answers (1)

best_answer

Co ( NH_{3} )_{5}Cl_{3} \longrightarrow 2Cl^-+[ Co( NH_{3} )_{5}Cl ]^{2+}

Co\left ( NH_{3} \right )_{5}Cl_{3}+AgNO_{3}\rightarrow 2AgCl+\left [ Co\left ( NH_{3} \right )_{5}Cl \right ]\left ( NO_{3} \right )_{2}

The given reactions indicate that the complex is  \left [ Co\left ( NH_{3} \right )_{5}Cl \right ]Cl_{2}

Hence, the correct answer is Option (1)

Posted by

Sanket Gandhi

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