Concept explainers
(a)
Interpretation:
The oxidation half cell and the reduction half cell for the given unbalance redox reactions is to be written.
Concept Introduction:
When the oxidation state of a substance increases by losing electrons, it is termed as an oxidation. The half cell reaction taking place at the electrode on which oxidation occurs is the oxidation half cell reaction And when the oxidation state of a substance decreases by gaining electrons, it is termed as a reduction. The half cell reaction taking place at the electrode on which reduction occurs is the reduction half cell reaction
(b)
Interpretation:
The electrodes at which oxidation and reduction is taking place is to be named.
Concept Introduction:
The oxidation half cell reaction takes place at anode and the reduction half cell takes place at cathode.
(c)
Interpretation:
The direction of flow of electrons in an external wire and electrical device connected between the electrodes is to be determined.
Concept Introduction:
In an
(d)
Interpretation:
The direction of flow of ions in the given salt bridge is to be determined.
Concept Introduction:
A salt bridge in an electrochemical cell consists of an inert electrolyte like
It is generally used to connect the two halves of the electrochemical cell to one another.
It prevents the
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Chemistry: The Molecular Science
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