(a)
Interpretation: The given half-reaction which take place in acidic solution needs to be balanced.
Concept Introduction: By transfer of electrons,
(a)
Answer to Problem 27A
The balance reduction half-reaction is-
The balance oxidation half-reaction is-
Explanation of Solution
The oxidation state of the each element in this reaction is calculated as follows:
Oxidation state decreases from
Balance I by multiplying 2 in reactant side.
Balance O by using
Now, add electrons to balance charge. To balance charge on both sides, add ten electrons on the left. Hence, the balanced equation is-
Oxidation state of
To balance I in both side, multiply reactant side I by to 2.
To balance charge on both sides, add
Multiply equation (2) by 5. After that, add both the equations to get the net balance equation.
In the overall reaction, charge and elements are balanced in both sides.
(b)
Interpretation: The given half-reaction which take place in acidic solution needs to be balanced.
Concept Introduction: By transfer of electrons, oxidation-reduction reactions are characterized. The transfer occurs to form ions. Oxidation reaction is caused by losing electrons and reduction caused by gaining electrons.
(b)
Answer to Problem 27A
The balance reduction half-reaction is-
The balance oxidation half-reaction is-
Explanation of Solution
The oxidation state of the each element in this reaction is calculated as follows:
Oxidation state decreases from
Balance Cr by multiplying 2 in product side.
Balance O by using
Now, add electrons to balance charge. To balance charge on both sides, add six electrons on the left. Hence, the balanced equation is-
Oxidation state of
To balance I in both side, multiply reactant side I by to 2.
To balance charge on both sides, add
Multiply equation (2) by 3. After that, add both the equation to get the net balance equation.
In the overall reaction, charge and elements are balanced in both sides.
(c)
Interpretation: The given half-reaction which take place in acidic solution needs to be balanced.
Concept Introduction: By transfer of electrons, oxidation-reduction reactions are characterized. The transfer occurs to form ions. Oxidation reaction is caused by losing electrons and reduction caused by gaining electrons.
(c)
Answer to Problem 27A
The balance reduction half-reaction is-
The balance oxidation half-reaction is-
Explanation of Solution
The oxidation state of the each element in this reaction is calculated as follows:
Now, add electrons to balance charge. To balance charge on both sides, add ten electrons on the left. Hence, the balanced equation is-
Oxidation state of
To balance I in both side, multiply reactant side I by to 2.
To balance charge on both side add
Multiply equation (2) by 5. After that, add both the equation to get the net balance equation.
In the overall reaction, charge and elements are balanced in both sides.
Chapter 18 Solutions
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