MCQ
When $KBr$ is treated with concentrated ${H_2}S{O_4}$ redish brown gas evolved, gas is
- AMixture of bromine and $HBr$
- B$HBr$
- ✓Bromine
- DNone of these
$2KHS{{O}_{4}}+MnS{{O}_{4}}+2{{H}_{2}}O+B{{r}_{2}}$
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(First dissociation constant of $H _{2} CO _{3}=4.0 \times 10^{-7}$$\log 2=0.3 ;$ density of the soft $\left.\operatorname{drink}=1\, g\, mL ^{-1}\right)$
