Concept explainers
Interpretation:
The reaction of dichromate ion with iodide ions needs to be balanced in acid solution.
Concept introduction:
Half reaction method to balance ionic equation in acidic solution involve:-
- Assign the oxidation number to each element.
- Check which element is oxidized and which element is reduced. Write
oxidation and reduction half reactions. - Check the change in oxidation number for the elements which are oxidized and reduced.
- Then add enough hydrogen ions and water molecules to the equation to balance hydrogen atoms on both sides.
- Adjust the coefficients so that number of electrons lost in oxidation is equal to electrons gained in reduction.
- Add the balanced half reactions.
![Check Mark](/static/check-mark.png)
Answer to Problem 88A
Balanced equation in ionic form
Explanation of Solution
Reaction in ionic form:
Assigning the oxidation number-
The oxidation numbers of atoms shows that
Change in oxidation number of
Change in oxidation number of
Balancing the atoms and charges:
Now adding both reactions after multiplying oxidation half cell reaction with 3
Balanced equation in ionic form
Chapter 19 Solutions
Chemistry: Matter and Change
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