(a)
Interpretation:
The reason for the potassium ion is not given in the equation has to be explained.
Concept introduction:
Balancing reaction:
Balanced reaction is a
Steps in balancing the information
- Step 1: Write the unbalanced equation
- Step 2: Find the coefficient to balance the equation.
- The coefficient should be reduced to the smallest whole number.
(b)
Interpretation:
The reason for the given reaction is a redox reaction has to be explained.
Concept introduction:
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.
Oxidation - reduction reaction (Redox reaction): The electrons are transferred to one to other is called oxidation reduction reaction.
(c)
Interpretation:
The oxidizing, reducing agent in the given redox reaction has to be identified.
Concept introduction:
Refer to part (a)
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Chemistry: The Molecular Science
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