Concept explainers
(a)
Interpretation:
The balanced chemical equation for the oxidation of
Concept introduction:
In an
If oxidation takes place on an electrode, that electrode is called anode. The species in that electrode remove electrons and itself gets oxidized.
If reduction takes place on an electrode, that electrode is called cathode. The species in that electrode absorbs electrons and itself gets reduced.
The electrode potential of cell can be calculated as follows:
Nernst equation for a cell can be represented as follows:
Here,
z = number of moles of electrons transferred in the cell and Q is ratio of concentration of products to reactant in a cell.
If E cell is positive, a reaction occurs spontaneously in the forward direction for the stated conditions.
If E cell is negative, the reaction occurs spontaneously in the reverse direction for the stated conditions.
If the E cell = 0 reaction is at equilibrium for the stated conditions.
(b)
Interpretation:
The balanced chemical equation for the oxidation of
Concept introduction:
In an electrochemical cell, there are two electrodes that can be observed.
If oxidation takes place on an electrode, that electrode is called anode. The species in that electrode remove electrons and itself gets oxidized.
If reduction takes place on an electrode, that electrode is called cathode. The species in that electrode absorbs electrons and itself gets reduced.
The electrode potential of cell can be calculated as follows:
Nernst equation for a cell can be represented as follows:
Here,
z = number of moles of electrons transferred in the cell and Q is ratio of concentration of products to reactant in a cell.
If E cell is positive, a reaction occurs spontaneously in the forward direction for the stated conditions.
If E cell is negative, the reaction occurs spontaneously in the reverse direction for the stated conditions.
If the E cell = 0 reaction is at equilibrium for the stated conditions.
(c)
Interpretation:
The balanced chemical equation for the oxidation of
Concept introduction:
From pH of a solution, the concentration of hydrogen ion can be calculated as follows:
Here,
In an electrochemical cell, there are two electrodes that can be observed.
If oxidation takes place on an electrode, that electrode is called anode. The species in that electrode remove electrons and itself gets oxidized.
If reduction takes place on an electrode, that electrode is called cathode. The species in that electrode absorbs electrons and itself gets reduced.
The electrode potential of cell can be calculated as follows:
Nernst equation for a cell can be represented as follows:
Here,
z = number of moles of electrons transferred in the cell and Q is ratio of concentration of products to reactant in a cell.
If E cell is positive, a reaction occurs spontaneously in the forward direction for the stated conditions.
If E cell is negative, the reaction occurs spontaneously in the reverse direction for the stated conditions.
If the E cell = 0 reaction is at equilibrium for the stated conditions.
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General Chemistry: Principles and Modern Applications (11th Edition)
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