When a rod of metal A is dipped in an aqueous solution of metal B (concentration of ` B^(2+) ` ion being 1 M) at `25^@ C`, the standard electrode potentials are `A^(2+) //A =- 0.76 ` volts, `B^(2+) //B= +0.34 ` volts .A. A will gradually dissolveB. B will deposit on AC. No reaction will occurD. Water will decompose into `H_(2)` and `O_(2)`.

When a rod of metal A is dipped in an aqueous solution of metal B (con

1.	When a rod of metal A is dipped in an aqueous solution of metal B (concentration of ` B^(2+) ` ion being 1 M) at `25^@ C`, the standard electrode potentials are `A^(2+) //A =- 0.76 ` volts, `B^(2+) //B= +0.34 ` volts .A. A will gradually dissolveB. B will deposit on AC. No reaction will occurD. Water will decompose into `H_(2)` and `O_(2)`.
Answer» Correct Answer - A ` A + B^(2+) to A^(2+) + B` has a positive EMF.

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What are elementary reactions ?

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