MCQ
When $KBr$ is treated with concentrated ${H_2}S{O_4}$ redish brown gas evolved, gas is
  • A
    Mixture of bromine and $HBr$
  • B
    $HBr$
  • Bromine
  • D
    None of these

Answer

Correct option: C.
Bromine
c
(c) $2KBr+3{{H}_{2}}S{{O}_{4}}+Mn{{O}_{2}}\xrightarrow{\Delta}$ 

$2KHS{{O}_{4}}+MnS{{O}_{4}}+2{{H}_{2}}O+B{{r}_{2}}$

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