
Concept explainers
(a)
Interpretation:
For “An oxidizing agent”, the oxidation number increase or decrease in the
Concept introduction:
Redox reaction: Redox reaction is a type of
Oxidation number:
The oxidation number of an element is zero. The oxidation number of a monoatomic ion equals its charge.
The oxidation number is zero for the summation of the oxidation numbers complete atoms in a complete formula.
The charge on the ion is equal to the summation of the oxidation numbers of complete atoms in poly atomic ion.
The oxidation state of alkali metal
The oxidation state of hydrogen is
An oxidizing agent gains the electrons and is reduced in a chemical reaction and it is electron acceptor.
A reducing agent loses electrons and is oxidized in a chemical reaction and it is electron donor.
The oxidation state is called as oxidation number, which describes degree of oxidation (loss of electrons) of an atom in a chemical compound. Theoretically, the oxidation state is positive, negative or zero.
(b)
Interpretation:
For “A reducing agent”, the oxidation number increase or decrease in the redox reaction has to be identified.
Concept introduction:
Refer to part (a)
(c)
Interpretation:
For “A substance undergoing oxidation”, the oxidation number increase or decrease in the redox reaction has to be identified.
Concept introduction:
Refer to part (a)
(d)
Interpretation:
For “A substance undergoing reduction”, the oxidation number increase or decrease in the redox reaction has to be identified.
Concept introduction:
Refer to part (a)

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Chapter 3 Solutions
Chemistry: The Molecular Science
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