1.

A complex compound of cobalt contains five NH_(3) molecules. One nitro group and two chloride ions for one Co atom. One mole of this compound produces three mole ions in aq. solution. On reacting with excess of AgNO_(3) solution, two moles of AgCl get precipitated. The formula of the complex compound is

Answer»

`[CO(NH_(3))_(4)NO_(2)Cl](NH_(3))Cl`
`[Co(NH_(3))_(5)Cl]Cl(NO_(2))`
`[Co(NH_(3))_(5)(NO_(2))Cl_(2)`
`[Co(NH_(3))_(5)][(NO)_(2)Cl_(2)]`

Solution :To give 2 mole of AGCL ppt `2Cl^(-)` ions mustpresent outside the []


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