An aqueous solution of salt containing an acidic radical `X`-reacts with sodium hypochlorite in neutral medium. The gas evolved produces blue black co
An aqueous solution of salt containing an acidic radical `X`-reacts with sodium hypochlorite in neutral medium. The gas evolved produces blue black colour spot on the starch paper.The anion `X^(-)` is:
A. `CH_(3)COO^(-)`
B. `Br^(-)`
C. `I^(-)`
D. `NO_(2)^(-)`
4 views
1 Answers
Correct Answer - C
`OCl^(-)+3l^(-)+H_(2)Otol_(3)^(-)+2OH^(-)+Cl^(-)`
`l_(3)^(-)+` starch `to` blue-black spot on starch paper due to the formation of iodine-starch adsorption complex.
4 views
Answered