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)CO O^(-)`B. `Br^(-)`C. `l^(-)`D. `NO_(2)^(-)`s

An aqueous solution of salt containing an acidic radical `X^(-)` react

1.	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)CO O^(-)`B. `Br^(-)`C. `l^(-)`D. `NO_(2)^(-)`s
Answer» Correct Answer - C `Ocl^(-) +3l^(-)+H_(2)O to l_(3)^(-)+2OH^(-)+Cl^(-)` `l_(3)^(-) + "starch" to ` blue -black spot on starch paper appears due to the formation of iodine-starch adsorption complex.

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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)CO O^(-)`B. `Br^(-)`C. `l^(-)`D. `NO_(2)^(-)`s

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