The balanced equations for the anode, cathode, and overall cell reactions for the given cell and the Nernst equation in a form that applies at body temperature should be written. The cell voltage should be calculated at given conditions. Concept introduction: Accidentally chewing on a stray fragment of aluminium foil can cause a sharp tooth pain if the aluminium comes in contact with an amalgam filling. The filling, an alloy of silver, tin, and mercury, acts as the cathode of a tiny galvanic cell, the aluminium behaves as the anode, and saliva serves as the electrolyte. When the aluminium and the filling come in contact an electric current passes from the aluminium to the filling. which is sensed by a nerve in the tooth. Aluminium is oxidised at the anode, and O 2 gas is reduced to water at the cathode.

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Chapter 18, Problem 18.17A

Interpretation Introduction

Interpretation:

The balanced equations for the anode, cathode, and overall cell reactions for the given cell and the Nernst equation in a form that applies at body temperature should be written. The cell voltage should be calculated at given conditions.

Concept introduction:

Accidentally chewing on a stray fragment of aluminium foil can cause a sharp tooth pain if the aluminium comes in contact with an amalgam filling. The filling, an alloy of silver, tin, and mercury, acts as the cathode of a tiny galvanic cell, the aluminium behaves as the anode, and saliva serves as the electrolyte. When the aluminium and the filling come in contact an electric current passes from the aluminium to the filling. which is sensed by a nerve in the tooth. Aluminium is oxidised at the anode, and O₂ gas is reduced to water at the cathode.

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