Question

On reaction with silver nitrate solution, nitrite ion gives:

• A. a white coloured precipitate of silver nitrate
• B. a black precipitate of silver nitrite
• C. a black coloured solution of silver nitrite
• D. none of the above

Answer 1

The correct option is A a white coloured precipitate of silver nitrate

To find: The product of reaction of $AgN{O}_3$ and ${N{O}_2}^{-}$

$Ag{NO}_3\left(aq\right)+NaN{O}_2\to Na{NO}_3\left(aq\right)+AgN{O}_2\left(ppt\right)$

$NaN{O}_2$ supplies the nitrite ion which reacts with aqueous $AgN{O}_3$ which is nitrate solution. $AgN{O}_2$ (precipitate) is white in colour.