The dichromate [Cr 2 O 7 ] 2- oxoanion, has an oxidation state Cr 6+ , gets reduced in acidic media to form Cr 3+ . Cr 2 O 7 2− (aq) + 14H + (aq) + 6e− ⟶ 2Cr 3+ (aq) + 7H 2 O (l) Which statement best describes the role of [Cr 2 O 7 ] 2- in acidic medium? a. It is reduced and acts as an oxidising agent. b. It is reduced and acts as a reducing agent. c. It is oxidised and acts as an oxidising agent. d. It is oxidised and acts as a reducing agent.

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The dichromate [Cr₂O₇]^2- oxoanion, has an oxidation state Cr⁶⁺, gets reduced in acidic media to form Cr³⁺.

Cr₂O₇²⁻(aq) + 14H⁺(aq)+ 6e− ⟶ 2Cr³⁺(aq) + 7H₂O (l)

Which statement best describes the role of [Cr₂O₇]^2- in acidic medium?

a. It is reduced and acts as an oxidising agent.

b. It is reduced and acts as a reducing agent.

c. It is oxidised and acts as an oxidising agent.

d. It is oxidised and acts as a reducing agent.

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