Pila Daniell (celda galvánica cinc-cobre)

Zn + Cu2+ → Zn2+ + Cu

Descripción general

The Daniell cell consists of a zinc anode in ZnSO₄ solution and a copper cathode in CuSO₄ solution, connected by a salt bridge. Zinc is oxidized (E° = -0.76 V) and copper ions are reduced (E° = +0.34 V), giving a cell potential of 1.10 V. Invented by John Frederic Daniell in 1836, it was the first reliable source of electricity.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Cinc Zn 1 (s)
Producto Cobre Cu 1 (s)

Ejemplo cotidiano

The Daniell cell powered early telegraph networks across America and Europe, enabling rapid long-distance communication.

Importancia industrial

Aunque superada por las baterías modernas, la pila de Daniell sigue siendo el ejemplo de libro de texto para enseñar electroquímica y potenciales de electrodo.

Preguntas frecuentes

What is the equation for Pila Daniell (celda galvánica cinc-cobre)?
The balanced equation is: Zn + Cu²⁺ → Zn²⁺ + Cu.
What type of reaction is Pila Daniell (celda galvánica cinc-cobre)?
Pila Daniell (celda galvánica cinc-cobre) is a electroquímica reaction. It is reversible under certain conditions.
Is Pila Daniell (celda galvánica cinc-cobre) exothermic or endothermic?
Pila Daniell (celda galvánica cinc-cobre) is exothermic (releases energy). The enthalpy change (ΔH) is -210.0 kJ/mol.