The balanced redox reaction, if it occurs in acidic solution, is
5C₂O₄²⁻(aq) + 2MnO₄⁻(aq) + 16H⁺-----> 10CO₂(g) + 2Mn²⁺(aq) + 8H₂O(l)
<h3>What are redox reaction?</h3>
Redox reactions are those in which loss and again of electrons occur.
To balance the redox reaction, we must first break the whole reaction into half equations;
Oxidation half equation

Reduction half equation

Now combine both the reactions

Thus, the coefficient of H₂C₂O₄ is 5 and that of water is 8.
Learn more about redox reactions
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Soil covered, saturated, submerged, flooded w water, standing water
Hello,
I believe that your answer would be <span>B. water freezes
</span>Hope this helps
C
This is because 10+5=15
15/45=0.3