contestada

The standard cell potential (EĀ°cell) for the voltaic cell based on the reaction below is ________ V. Sn2+ (aq) + 2Fe3+ (aq) ā†’ 2Fe2+ (aq) + Sn4+ (aq) The standard cell potential (EĀ°cell) for the voltaic cell based on the reaction below is ________ V. Sn2+ (aq) + 2Fe3+ (aq) 2Fe2+ (aq) + Sn4+ (aq) +1.39 +1.21 +0.46 -0.46 +0.617

Respuesta :

dsdrajlin

Answer:

The standard cell potential (EĀ°cell) for the voltaic cell based on the reaction below is 0.64 V.

Explanation:

Let's consider the following redox reaction.

SnĀ²āŗ(aq) + 2 FeĀ³āŗ(aq) ā†’ 2 FeĀ²āŗ(aq) + Snā“āŗ(aq)

We can recognize the following half-reactions.

Cathode (reduction): 2 FeĀ³āŗ(aq) + 2 eā» ā†’ 2 FeĀ²āŗ(aq) Ā  Ā EĀ°red = 0.77 V

Anode (oxidation): SnĀ²āŗ(aq) ā†’ Snā“āŗ(aq) + 2 eā» Ā  Ā  Ā  Ā  Ā  Ā  Ā EĀ°red = 0.13 V

The standard cell potential (EĀ°cell) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

EĀ°cell = EĀ°red, cat - EĀ°red, an = 0.77 V - 0.13 V = 0.64 V

Otras preguntas