A solution of silver nitrate was stirred with an iron rod. Will it cause any change in the concentration of silver and nitrate ions ?

Explanation

Since `E^(@)` of `Fe^(2+)//Fe` (-0.44 V) is lower than that of `Ag^(+)//Ag(+0.80 V)` electrode therefore `Ag^(+)` gets reduced and Fe gets oxidised As a result concentration of `Ag^(+)` ions decreases while that of `NO_(3)^(-)` ions remains unchanged
`2 Ag^(+) (aq)+Fe(s)rarr 2 Ag(s)+Fe^(2+)(aq)`