(A) When a mixture containing bromide ions $(Br^{-})$ is heated with $MnO_2$ and concentrated $H_2SO_4$,the bromide ions are oxidized to bromine gas $

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(A) When a mixture containing bromide ions $(Br^{-})$ is heated with $MnO_2$ and concentrated $H_2SO_4$,the bromide ions are oxidized to bromine gas $(Br_2)$,which is reddish-brown in color.The reaction is: $2NaBr + MnO_2 + 2H_2SO_4 \rightarrow Na_2SO_4 + MnSO_4 + 2H_2O + Br_2(g)$.Therefore,the presence of $Br^{-}$ ions leads to the evolution of a brown gas.

Class 12 Chemistry Principles Related to Practical Chemistry Wet Test for Acid Radical

Medium

Which ion produces a brown gas when the mixture is heated with $MnO_2$ and concentrated $H_2SO_4$?

A
$Br^{-}$
B
$NO_3^{-}$
C
$Cl^{-}$
D
$I^{-}$

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Wet Test for Acid Radical

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Which ion produces a brown gas when the mixture is heated with $MnO_2$ and concentrated $H_2SO_4$?

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