
Interpretation: The correct coefficients for each reactant and product are to be chosen for the following reaction from the given options:
a) 2, 1, 4 → 2, 1, 2
b) 1, 1, 2 → 1, 1, 1
c) 2, 1, 2 → 2, 1, 1
d) 2, 1, 2 → 2, 1, 2

Answer to Problem 1SAQ
Solution:
To solve this problem, begin by assigning oxidation states to all atoms and identify the substances being oxidized and reduced.
Explanation of Solution
The equation for this reaction as follows:
Separate the overall reaction into two half-reactions: one for oxidation and other for reduction.
Balance each half-reaction; balance O by adding
Balance each-half reaction with respect to charge by adding electrons. Make the sum of the charges on both sides of the equation equal by adding as many electrons as necessary.
Make the number of electrons in both-half reactions equal by multiplying one or both half-reactions by a small whole number.
Add the two half-reaction together, cancelling electrons and other species as necessary.
Conclusion:
Thus, the coefficient of each reactant and product will be
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Chapter 18 Solutions
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