Chemistry - Redox Reactions Question with Solution | TestHub

ChemistryRedox ReactionsDetermination of Oxidation StateMedium2 minQB

ChemistryMediumsingle choice

Passage / Comprehension

Oxidation state of central atom in B is (When salt $(A)$ is $NH_{4} Cl$ ) :-

Options:

Answer:

Solution:

Salt (A) = NH₄Cl reacts with conc. H₂SO₄ and K₂Cr₂O₇.
NH₄⁺ reduces dichromate ion, forming Cr³⁺ compounds.
Hence chromium changes from +6 to +3 oxidation state.
Therefore, central atom in B is Cr in +3 state.

Answer: (B) +3

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

⏱ 2mℹ️ Source: QB

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