1) Calculate the standard potential (Eo value) for the following redox reaction. 2) Circle the reducing...

1) Calculate the standard potential (Eo value) for the following redox reaction.

2) Circle the reducing agent.

2NO3–(aq) + 8H+(aq) + 3Cu(s) 2NO(g) + 4H2O(l) + 3Cu2+(aq)

Eo =

Solutions

Expert Solution

NO₃^–(aq) + 4 H⁺(aq) + 3 e^– NO(g) + 2 H₂O E⁰= +0.96 ----------(1)

Cu²⁺(aq) + 2 e^– Cu(s) E⁰= +0.34 ----------(2)

Cu(s)Cu²⁺(aq) + 2 e^– E⁰= -0.34 ----------(3)

(1)x2 + (3)x3 2NO₃^–(aq) + 8H⁺(aq) + 3Cu(s) 2NO(g) + 4H2O(l) + 3Cu²⁺(aq)

the standard potential E⁰= 2x0.96 + 3x(-0.34) = 1.92-1.02 =0.90 V

The reducing agent is Cu(s) as it reduces NO₃^– to NO

queen_honey_blossom answered 1 year ago

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