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Give reaction when Zn red kept in copper nitrate solution ? |
Answer» Solution : A strip of Zn is placed in copper nitrate solution blue colour of solution gets disappear and the strip becomes coated with reddish METALLIC and the blue colour of the solution disappears. When `Cu^(+2)` is reduced into Cu from the solution, it will be deposited on Zn rod so blue colour will be dissappear and `Zn^(+2)` present in solution so it will BECOME colourless.  If hydrogen sulphite gas is passed through thecolourless solution containing `Zn^(+2)` ions, appearance of white zinc sulphide ZNS can be seen on MAKING the solution alkaline with AMMONIA. |
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