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Chemistry - Redox Reactions Question with Solution | TestHub

ChemistryRedox ReactionsProblem involving Equivalent ConceptHard2 minQB

ChemistryHardnumerical

If 45.5 g $V_{2} O_{5}$ is dissolved in acid and reduced to $V^{2 +}$ by treatment with zinc metal, how many grams of $I_{2}$ could be reduced by the resulting $V^{2 +}$ solution, as it is oxidized to $V^{4 +}$ ? (V = 51, I = 127)

Answer:

127.00

Solution:

Moles $V_{2} O_{5}$ = 45.5/182 = 0.25 mol, giving 0.5 mol $V^{2 +}$ . Each $V^{2 +}$ $\to$ $V^{4 +}$ gives $2 e^{-}$ , so electrons = 1.0 mol, reducing 0.5 mol $I_{2}$ = 127 g. Ans 0127.

Stream:JEESubject:ChemistryTopic:Redox ReactionsSubtopic:Problem involving Equivalent Concept

⏱ 2mℹ️ Source: QB

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