

InterviewSolution
Saved Bookmarks
1. |
Which of the followig ions will finally give a black precipitate with `Ag^(o+)` ion?A. `SO_(3)^(2-)`B. `Br^(-)`C. `CrO_(4)^(2-)`D. `S_(2)O_(3)^(2-)` |
Answer» Correct Answer - D `2Ag+S_(2)O_(3)^(2-)rarrAg_(2)S_(2)O_(3)`, white ppt which readily changes to yellow, orange, brown and finally black due to the formation of silver sulphide. `Ag_(2)S_(2)O_(3)+H_(2)OrarrH_(2)SO_(4)+Ag_(2)S ("black")` |
|