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Chemistry - Redox Reactions Question with Solution | TestHub

ChemistryRedox ReactionsDetermination of Oxidation StateMedium2 minQB

ChemistryMediumsingle choice

An amount of 0.5 mole of $B O_{3}^{-}$ gains 1.0 mole of electrons in a process. Assuming that there is no change in oxidation state of oxygen, determine the oxidation state of 'B' in the product.

Options:

Answer:

Solution:

Electrons gained per $B O_{3}^{-}$ = 1.0/0.5 = 2. In $B O_{3}^{-}$ : $x$ + 3(-2) = -1 $\Rightarrow$ $x$ = +5. After gaining 2 $e^{-}$ : +5 - 2 = +3. Hence (c).

Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Determination of Oxidation State

⏱ 2mℹ️ Source: QB

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