When sodium carbonate is added in excess to a metal chloride solution followed by the bromine water and then mixture is slightly heated , the solution turns apple green. The metal chloride is `:`A. `NiCl_(2)`B. `CoCl_(2)`C. `CrCl_(2)`D. `FeCl_(3)`

When sodium carbonate is added in excess to a metal chloride solution

1.	When sodium carbonate is added in excess to a metal chloride solution followed by the bromine water and then mixture is slightly heated , the solution turns apple green. The metal chloride is `:`A. `NiCl_(2)`B. `CoCl_(2)`C. `CrCl_(2)`D. `FeCl_(3)`
Answer» Correct Answer - B `CoCl_(2)+2NaHCO_(3)rarrCo(HCO_(3))_(2)+2NaCl` `CO(HCO_(3))_(2)+4NaHCO_(3)rarrNa_(4)[Co(CO_(3))_(3)]+3H_(2)O+3CO_(2)` `Br_(2)+H_(2)Orarr2HBr+[O]` `2Na_(4)[Co(OC_(3))_(3)]+H_(2)O+[O]rarr2Na_(3)[Co(CO_(3))_(3)]("green")+2NaOH`

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When sodium carbonate is added in excess to a metal chloride solution followed by the bromine water and then mixture is slightly heated , the solution turns apple green. The metal chloride is `:`A. `NiCl_(2)`B. `CoCl_(2)`C. `CrCl_(2)`D. `FeCl_(3)`

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