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Chemistry · PYQ NEET UG 2018
हिन्दीConsider the change in oxidation state of bromine corresponding to different emf values as shown in the diagram below: \( \mathrm{BrO_4^- \xrightarrow{1.82\text{ V}} BrO_3^- \xrightarrow{1.5\text{ V}} HBrO} \) \( \mathrm{BrO_3^- \xrightarrow{1.595\text{ V}} Br_2 \xrightarrow{1.0652\text{ V}} Br^-} \)\nThen the species undergoing disproportionation is
Correct answer · Option 4
\( \mathrm{HBrO} \)
Explanation
A species undergoes disproportionation if the standard reduction potential to the left is less positive than the potential to the right. For \( \mathrm{HBrO} \), \( E^\circ \) value for reduction to \( \mathrm{Br_2} \) is higher than that for oxidation, making \( \mathrm{HBrO} \) unstable with respect to disproportionation.
