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QNEET-2018-Ch-871: NEET 2018 Chemistry - Class 12 NEET-2018-Ch-871 Solution: Consider the change in oxidation state of bromine corresponding …
Consider the change in oxidation state of bromine corresponding to different emf values as shown in the given diagram: Then the species undergoing disproportionation is: HBrO
Multiple Choice Options
- A BrO 4 �
- B BrO 3 �
- C Br 2
- D HBrO
Step-by-Step Verified Solution
Calculate E o cell corresponding to each
compound undergoing disproportionation
reaction. The reaction for which E o cell comes
out + ve is spontaneous.
HBrO _ Br 2 , E o HBrO/Br 2 = 1.595 V
HBrO _ BrO 3 � , E o BrO 3 - /HBrO = 1.595 V
E o cell for the disproportionation of HBrO,
E o cell = E o HBrO/Br 2 - E o BrO 3 - /HBrO
= 1.595 - 1.5
= 0.095 V = + ve
So, E o cell > 0
So, _ G o < 0 (Spontaneous)