1.

A student made the following observations in the laboratory: (i) Clean copper metal did not react with 1 molar Pb(NO_(3))_(2) solution (ii) Clean lead metal dissolved in a 1 molar AgNO_(3) solution and crystals of Ag metal appeared (iii) Clean silver metal did not react with 1 molar Cu(NO_(3))_(2) solutions.

Answer»

`CU, PB, Ag`
`Cu, Ag, Pb`
`Pb, Cu, Ag`
`Pb, Ag, Cu`

SOLUTION :Metal having more `E_(OP)^(@)` replaces the other FORM its salt SOLUTIONS.


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