1.

When a rod of metal A is dipped in an aqueous solution of metal B (concentration of B^(2+) ion being 1M) at 25^(@)C, the standard electrodepotentials are A^(2+)//A=-0.76volts, B^(2+)//B=+0.34 volts

Answer»

A will gradually dissolve
B will DEPOSIT on A
No reaction will occur
Water WIL decompose into `H_(2) and O_(2)`

Solution :Since `E_(A^(2+)//A)^(o) lt E_(B^(2+)//B)^(o)`. A has GREATER TENDENCY to be oxidized.
`A+B^(2+)toA^(2+)+B`.


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